All publications

A curcumin quantum dot blended polyacrylonitrile electrospun nanofiber coating on 316 L SS for improved corrosion resistance in the marine environment

Iffath Badsha, Renjith Kumar Rasal, Wirach Taweepreda, G. Arthanareeswaran, Devasena Thiyagarajan

RSC Advances · 2024

values and no pit formation for PAN-CMQD coated samples, proving the longevity of the coating. Thus, this work will serve as a cost-effective futuristic strategy for the large-scale development of anticorrosive nanofibrous coatings for enhancing the corrosion resistance behavior of metals and alloys in various industrial sectors.

Modification of chitosan-based membrane with epoxidized natural rubber for PEMFC application

Anuchit Wichianchom, Wirach Taweepreda, Qamber Ali, G. Arthanareeswaran

Journal of Rubber Research · 2023

Correction: NaCMC-decorated ZnO nanocomposite polymer membranes for the separation of reactive dyes from textile water

R. Robin, Vinoth Kumar Raja, R. Sathish Kumar, G. Arthanareeswaran, Wirach Taweepreda

New Journal of Chemistry · 2023

Correction for ‘NaCMC-decorated ZnO nanocomposite polymer membranes for the separation of reactive dyes from textile water’ by R. Robin et al. , New J. Chem. , 2023, 47, 20517–20526, https://doi.org/10.1039/D3NJ03783E.

Isolation, purification and characterization of β-glucan from cereals - A review

S. Sujithra, G. Arthanareeswaran, Ahmad Fauzi Ismail, Wirach Taweepreda

International Journal of Biological Macromolecules · 2023

Effect of TiO2 concentration in PVDF-TiO2-PVP mixed matrix membrane performance using ultrafiltration process

Rianyza Gayatri, Erna Yuliwati, Ahmad Noor Syimir Fizal, Muhamad Zulhilmi Zailani, Juhana Jaafar, Muzafar Zulkifli, Wirach Taweepreda, Ahmad Naim Ahmad Yahaya

Materials Today Proceedings · 2023

Deproteinization of Natural Rubber Latex and Its Pale-Colored Thin Films

Jirapornchai Suksaeree, Chanin Bumroongrat, Nantanat Polraksa, Wirach Taweepreda, Thawatchai Phaechamud, Wiwat Pichayakorn

Sustainability · 2023

The non-rubber components present in natural rubber latex can contribute to the dark color of dried films and may cause allergic reactions. This project aimed to develop light-color rubber films with minimal protein contamination. Various additives were incorporated, and a leaching procedure was implemented to address this issue. The evaluation focused on protein content, color changes, and swelling properties of thin natural rubber films. Texapon N70 proved effective as both a latex stabilizer and leaching agent, while Uniphen P-23 served as a preservative. The combined use of these additives facilitated the removal of soluble serum through appropriate incubation, leaching, and centrifugation processes. The introduction of additional centrifugation cycles improved deproteinization and color reduction; however, it led to a loss of rubber mass and an increase in manufacturing costs. Increasing the amount of Texapon N70 and introducing alkali potassium hydroxide (KOH) further enhanced the efficiency of deproteinization and color reduction. The optimal conditions determined in this investigation were as follows: 0.5% w/w Texapon N70, 0.5% w/w KOH, 1% w/w Uniphen P-23, a 60-min incubation period, and a single leaching cycle with distilled water. These conditions resulted in a 90.57 ± 1.20% decrease in protein contamination and a color change (ΔE) of 433.69 ± 20.23. This successful condition can be replicated and scaled up for further applications.

Exploring the potential of thermophilic anaerobic co-digestion between agro-industrial waste and water hyacinth: operational performance, kinetic study and degradation pathway

Audrey Chai, Yee‐Shian Wong, Soon‐An Ong, Nabilah Aminah Lutpi, Sam Sung Ting, Wirach Taweepreda, Wei-Chin Kee, H.H. Khoo

Bioprocess and Biosystems Engineering · 2023

Preparation and Characterization of PVDF–TiO2 Mixed-Matrix Membrane with PVP and PEG as Pore-Forming Agents for BSA Rejection

Rianyza Gayatri, Ahmad Noor Syimir Fizal, Erna Yuliwati, Md. Sohrab Hossain, Juhana Jaafar, Muzafar Zulkifli, Wirach Taweepreda, Ahmad Naim Ahmad Yahaya

Nanomaterials · 2023

Polymeric membranes offer straightforward modification methods that make industry scaling affordable and easy; however, these materials are hydrophobic, prone to fouling, and vulnerable to extreme operating conditions. Various attempts were made in this study to fix the challenges in using polymeric membranes and create mixed-matrix membrane (MMMs) with improved properties and hydrophilicity by adding titanium dioxide (TiO2) and pore-forming agents to hydrophobic polyvinylidene fluoride (PVDF). The PVDF mixed-matrix ultrafiltration membranes in this study were made using the non-solvent phase inversion approach which is a simple and effective method for increasing the hydrophilic nature of membranes. Polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) as pore-forming chemicals were created. Pure water flux, BSA flux, and BSA rejection were calculated to evaluate the mixed-matrix membrane’s efficiency. Bovine serum albumin (BSA) solution was employed in this study to examine the protein rejection ability. Increases in hydrophilicity, viscosity, and flux in pure water and BSA solution were achieved using PVP and PEG additives. The PVDF membrane’s hydrophilicity was raised with the addition of TiO2, showing an increased contact angle to 71°. The results show that the PVDF–PVP–TiO2 membrane achieved its optimum water flux of 97 L/(m2h) while the PVDF–PEG–TiO2 membrane rejected BSA at a rate greater than 97%. The findings demonstrate that use of a support or additive improved filtration performance compared to a pristine polymeric membrane by increasing its hydrophilicity.

NaCMC-decorated ZnO nanocomposite polymer membranes for the separation of reactive dyes from textile water

R. Robin, Vinoth Kumar Raja, Rajnish Kumar, G. Arthanareeswaran, Wirach Taweepreda

New Journal of Chemistry · 2023

Nanostructured ZnO/carboxymethyl cellulose nanocomposite-embedded polymer membranes developed for the removal of reactive black 5 (RB5) dye from textile water.

Advanced extraction and separation approaches for the recovery of dietary flavonoids from plant biomass: A review

S. A. Gokula Krishnan, G. Arthanareeswaran, Gnanaselvam Gnanasekaran, Zsuzsanna László, Gábor Veréb, Szabolcs Kertész, Wirach Taweepreda

Biomass Conversion and Biorefinery · 2022

Impact of Climate Change on Cassava Yield in Nigeria: An Autoregressive Distributed Lag Bound Approach

Casmir Ndukaku Anyaegbu, Kingsley Ezechukwu Okpara, Wirach Taweepreda, David Akeju, Kuaanan Techato, Robert Ugochukwu Onyeneke, S. Poshyachinda, Siwatt Pongpiachan

Agriculture · 2022

Across the globe, climate change is threatening the environment, crop yield and food security. The key to ensuring a sustainable environment, crop yield increase and food security is to identify the long-term significant impact of climate change and the means of reducing the effect. This study examined the impacts of climate change on cassava yield in Nigeria. Data were sourced from the Climate Change Knowledge Portal and the Food and Agricultural Organization of the United Nations spanning from 1990 to 2019. The impact of climate change was analyzed using Autoregressive Distributed Lag Bound approach, Error Correction Model and Augmented Dickey–Fuller and Phillips–Perron tests for stationarity test. The model was subjected to diagnostic tests such as stability tests, normality tests, serial correlation tests and heteroscedasticity tests. With the exception of temperature, the study revealed that arable land, rainfall and greenhouse gases such as C2O, nitrous oxide and methane had a long-term significant impact on cassava yield in Nigeria. The study also noted that methane causes long-term significant damage to cassava yield more than any other greenhouse gas and climatic variables in the study. We recommended policies and programs that facilitate the uptake of climate-smart agriculture that centers on greenhouse gas emission reduction and on crop improvement research by breeding crop varieties that will be resilient to climate shocks.

Polymer Blended Deproteinized Natural Rubber Reservoirs for Nicotine Transdermal Patches: In vitro Drug Release, Permeation Study, and Stability Test

Wiwat Pichayakorn, Jirapornchai Suksaeree, Wirach Taweepreda, Garnpimol C. Ritthidej

Journal of Polymers and the Environment · 2021

Investigation of intrinsic bisphenol separation capacity of zeolitic imidazolate framework-8 based membranes

Sujithra Sundarajan, Yohannan Subin Sabilon, G. Arthanareeswaran, Wirach Taweepreda

Desalination and Water Treatment · 2021

ABSTRACT The present study deals with the synthesis of polyetherimide (PEI)-based membrane with zeolitic imidazolate framework (ZIF) nanoparticles as fillers by wet phase technique. The synthesized membranes were characterized based on their physical and chemical properties and were used to study the effective removal of Bisphenol A (BPA) from water. After the BPA removal with different membrane compositions, it was found that 1% PEI/ZIF-8 mixed matrix membrane gave maximum BPA rejection of 94.1% in comparison with other membranes. The flux recovery ratio of 0.92 was also found to be the highest for 1% PEI/ZIF-8 membrane which shows that this membrane has undergone the least fouling when compared to other membrane compositions. Overall, a 1% concentration of PEI/ZIF-8 membrane showed better characteristics and a maximum percentage of BPA removal was obtained.

Propranolol Hydrochloride Film Coated Tablets Using Natural Rubber Latex Blends as Film Former

Wiwat Pichayakorn, Kamon Panrat, Jirapornchai Suksaeree, Wirach Taweepreda

Journal of Polymers and the Environment · 2021

Improvement of the Mechanical Properties by Guar Gum Addition of Epoxidized Natural Rubber/Polyethylene Glycol Composite Membranes

Kritsada Phatcharasit, Wirach Taweepreda

Lecture notes in mechanical engineering · 2021

The International Conference on Multifunctional and Hybrid Composite Materials for Energy, Environment and Medical applications (ICMHCEE 2019)

G. Arthanareeswaran, Wirach Taweepreda

Asia-Pacific Journal of Chemical Engineering · 2020

Energy conversion from wastewater sewage sludge

Arif Billah, Kuaanan Techato, Wirach Taweepreda

Asia-Pacific Journal of Chemical Engineering · 2020

Abstract Natural rubber‐based industries in Southern Thailand are generating concentrated latex sewage sludge (CLS), which is commonly managed by landfilling practice that is causing serious environmental hazards. The purpose of this study was to develop a method to produce pellets using CLS and para‐wood sawdust as a potential biomass source for energy generation. The process started with dewatering the CLS through a decanter centrifuge. Then a flat die pellet mill was applied for copelletization. Finally, the pellets were investigated to evaluate the higher heating value and toxic heavy metals (Cu, Zn, Cr, As, Cd, and Pb) using proximate ‐ ultimate analysis, fourier transform infrared analysis, scanning electron microscopy, calorific value, thermogravimetric analysis, atomic absorption spectrometer, and inductively coupled plasma optical emission spectroscopy. The results showed that the addition of the para‐wood sawdust resulted in higher heating value and lower ash content of 3,620 ± 12 kcal/kg and 4.93 ± 0.98%, respectively. Besides, it has increased the carbon content of the pellet from 28.23 to 46.26% highest among all the samples. Furthermore, the method developed in this study is not only environmentally friendly but also economically sound than the earlier management of CLS.

Innovation of Colostomy Appliance from Deproteinised Natural Rubber (DPNR)

Worrawit Wanitsuwan, Pawan Krainara, Ekwipoo Kalkornsurapranee, Wisarut Srisintorn, Wiwat Pichayakorn, Wirach Taweepreda, Pairote Wongputtisin, Somporn Wannawong

International Journal of Innovative Research in Medical Science · 2019

Background and Objectives: In Thailand, the Colorectal cancer incidence rate is 127.7 per 100,000 for men and 125.5 per 100,000 for women. Twenty percent of these patients have a permanent or temporary colostomy that needs colostomy flange. The colostomy flanges that are available in Thailand are imported and are expensive. Thailand is an agricultural country and is the leading natural rubber producer and exporter. Flange made within the country would cost significantly less than the imported ones. Nevertheless, the safety standard is the main point that we considered. Material and methods: This study is an experimental prospective non-randomized control trial study at Songklanagarind Hospital. The study was approved and monitored by the ethical committee of Songklanagarind Hospital. Thailand Institute of Scientific and Technological Research (TISTR) approved the animal phase. Then, the volunteer phase was performed to conduct the best one of the material formulas for colostomy flange. Result: Fresh latex has 16.66% dermatitis and no anaphylaxis. Block latex and concentrated latex has the same allergic symptoms (13.1% dermatitis) but Block latex show a lower rate of other symptoms including itch and hyperpigmentation. Block latex was selected to produce Deproteinised Natural Rubber (DPNR). Three Deproteinised Natural Rubbers (DPNR) were achieved. Rubber formula 2 causes the lowest allergic symptoms; there is no anaphylaxis and only 0.5% dermatitis. Conclusion: Rubber formula 2 is the lowest prevalence of latex allergy in this study and is a lower prevalence compared to the previous study. It is suggested that Rubber formula 2 is safe to be the material for producing a colostomy flange. However, clinical trial and data must be collected during the patient phase trail.

The effect of field natural rubber latex pretreatment with cationic exchange resin on latex dipped film properties

S. Kaewthai, Sineenart Puangmanee, Wirach Taweepreda

Journal of Rubber Research · 2019

Preparation and characterization of polymer electrolyte membrane from chloroacetate chitosan/chitosan blended with epoxidized natural rubber

Qamber Ali, Wirach Taweepreda, Kuaanan Techato

Polymer Testing · 2019

Mechanical and Morphological Properties of Sulfur-Cured Natural Rubber/Polyethylene/Epoxidized Natural Rubber Blends

Kritsada Phatcharasit, Wirach Taweepreda, Patompong Phummor

Key engineering materials · 2017

The polymer blend was prepared from natural rubber (NR) and polyethylene (PE) powder blended with epoxidized natural rubber (ENR) by using an internal mixer. In this study, epoxidized natural rubber (ENR) was used as compatibilizer for the blends. Blending ENR with PE powder and NR were prepared at various compositions from 0-20% by weight. Then, specimens from the blends were produced by compression molding at 150 °C. The mechanical and morphological properties of the composites were investigated. It was found that the addition of ENR content has improved the tensile strength, compression set and hardness for the ternary compositions composed of NR/PE powder/ENR compared to the binary one (i.e. NR/PE powder). ENR contributed to a better dispersion between the NR and PE phases as observed in the scanning electron microscopy.

Electrochromic properties of MoO3-WO3 thin films prepared by a sol-gel method, in the presence of a triblock copolymer template

Phuriwat Jittiarporn, Lek Sikong, Kalayanee Kooptarnond, Wirach Taweepreda, Stefan Stoenescu, Simona Bǎdilescu, Vo‐Van Truong

Surface and Coatings Technology · 2017

Effect of Low Molecular Weight Natural Rubber on Mixing and Vulcanized Properties of Low Energy Processing Natural Rubber

Saengchao Thongseenuch, Wirach Taweepreda, Krisda Suchiva

Sains Malaysiana · 2017

Compounding of natural rubber (NR) requires high energy due to the high viscosity characteristic of NR. In order to reduce the viscosity, low molecular weight of NR (LNR) latex was prepared from field latex by using oxidative phenyl hydrazine/O 2 system. LNR latex was mixed with high ammonium NR latex at 3, 5 and 10 phr to provide low energy processing NR (LEPNR). Viscosity molecular weights (Mv) of obtained LNR were 42.59, 18.42 and 6.66 kg/mol, respectively. It was found that the maximum Mooney viscosities and ML 1+4@100C of LEPNRs were significantly decreased with a decrease of Mv of LNR and an increase of LNR content as well. Specific mixing energy consumptions for mastication step and carbon black incorporation step in Brabender Plasticorder were characterized. The results showed that the mixing energy consumption decreased with an increase of LNR content and a decrease of Mv of LNR. Furthermore, an addition of LNR lowered the viscosity of the compounded rubber, slightly shortened the scorch time, and significantly changed the cure time. Although LNR dropped 50% and 100% modulus of vulcanized rubber, it slightly effected the tensile strength of the vulcanized rubber.

Fabrication and Properties of Rubber Nanofiber from Electrospinning

Wirach Taweepreda

InTech eBooks · 2017

Electrospun nanofibers of rubber blending with poly(vinyl chloride) (PVC) were prepared by electrospinning. Various concentrations of rubber solution were added to the PVC solution for several purposes of the electrospun nanofibers. The pristine and rubber plasticized nanofibers were characterized by field emission scanning electron microscopy (FE‐SEM), differential thermal analysis (DTA), and thermogravimetry analysis (TGA), respectively. Thermal properties from DTA and TGA results indicated that the addition of rubber decreased glass transition temperature (Tg) of PVC and increased heat resistance of PVC nanofiber. The dielectric constant of plasticized nanofibers measured using precision LCR meter indicated that the membranes were dense.

Deproteinized natural rubber latex/gelatinized starch blended films as drug delivery carrier

Rungtiwa Waiprib, Prapaporn Boonme, Wirach Taweepreda, Ekwipoo Kalkornsurapranee, Jirapornchai Suksaeree, Wiwat Pichayakorn

Monatshefte für Chemie - Chemical Monthly · 2017