Journal of Polymers and the Environment

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Comparison of Conventional and Microwave-assisted Extraction of Pectin from Watermelon Rind
Journal of Polymers and the Environment - Tập 31 - Trang 3363-3371 - 2023
Mohammad Majid, Saideh Fallah-Joshaqani, Mohsen Dalvi-Isfahan, Radmehr Hamdami
Microwave-assisted extraction (MAE) and conventional heating extraction (CHE) techniques have been employed to extract pectin from watermelon rind. Pectin extraction was performed under microwave irradiation at different power levels (100, 300, and 500 W) and irradiation times and compared with the CHE method. MAE method exhibits much higher efficiency than conventional extraction and the highest ...... hiện toàn bộ
Study on Biodegradable Starch/OMMT Nanocomposites for Packaging Applications
Journal of Polymers and the Environment - Tập 17 - Trang 203-207 - 2009
Penggang Ren, Tingting Shen, Fang Wang, Xing Wang, Zhengwei Zhang
The thermoplastic starch (TPS) and nanocomposite(TPS/OMMT) was prepared with 15% carbamide, 15% ethanolamine and different contents of organic activated montmorillonite (OMMT) by twin-screw extruder with a 130 °C barrel temperature. Fourier transforms infrared spectroscopy and wide angle X-ray diffraction shown that the alkylamine in dodecyl benzyl dimethyl ammonium bromide could react with MMT vi...... hiện toàn bộ
Influence of Organically Modified Nanoclay on Thermal and Combustion Properties of Bagasse Reinforced HDPE Nanocomposites
Journal of Polymers and the Environment - Tập 25 - Trang 1198-1207 - 2016
Behzad Kord, Pouria Ravanfar, Nadir Ayrilmis
The nanocomposites of high density polyethylene (HDPE)/bagasse flour (BF) with different contents of the organomodified montmorillonite (OMMT) were produced by melt blending process. The thermal stability and combustion behavior of nanocomposites were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry, and cone calorimeter tests. The results of TGA data of the nan...... hiện toàn bộ
Effects of Coagulation Residence Time on the Morphology and Properties of Poly (vinyl) Alcohol (PVA) Asymmetric Membrane via NIPS Method for O2/N2 Separation
Journal of Polymers and the Environment - Tập 28 - Trang 2810-2822 - 2020
Syed Shujaat Karim, Arshad Hussain, Sarah Farrukh, Mohammad Younas
This study revealed, a thorough investigation of coagulation residence time effects on the morphology, crystallinity, mechanical properties and oxygen (O2), nitrogen (N2) gas transport behaviour of asymmetric membranes prepared through PVA/water/THF ternary system using non-solvent induced phase separation method. For this purpose PVA asymmetric membranes were fabricated at different coagulation r...... hiện toàn bộ
Enhancing the Oil Adsorption Properties of Cellulose Nanofiber Aerogels Through Chemical Modification
Journal of Polymers and the Environment - - Trang 1-10 - 2023
Sara Sadat Fazel, Mehdi Jonoobi, Kambiz Pourtahmasi, Sima Sepahvand, Alireza Ashori
The primary objective of the study was to develop a method for enhancing the oil adsorption capacity of cellulose nanofibers (CNFs) by modifying their surface. To achieve this goal, aerogels were first dried in a freeze dryer, followed by surface hydrophobization of CNFs using hexadecyltrimethoxysilane (HDTMS) as the modifier. The optimal concentration of the HDTMS for enhancing the nanofiber’s su...... hiện toàn bộ
PLA and Organoclays Nanocomposites: Degradation Process and Evaluation of ecotoxicity Using Allium cepa as Test Organism
Journal of Polymers and the Environment - Tập 21 - Trang 1052-1063 - 2013
Patrícia Moraes Sinohara Souza, Nádia Aline Corroqué, Ana Rita Morales, Maria Aparecida Marin-Morales, Lucia Helena Innocentini Mei
In this study, nanocomposites of PLA and organoclays Cloisite 20A and Cloisite 30B were prepared by the melt intercalation method and the obtained samples were characterized by transmission electron microscopy (TEM). Since composting is an important proposal to the final disposal of biopolymers, the influence of clays on the hydrolytic degradation process of PLA was evaluated by visual analysis an...... hiện toàn bộ
The Integration of Methylene Blue Decolorization with Polyhydroxyalkanoate (PHA) Production Using Enterobacter Strain TS1L
Journal of Polymers and the Environment - Tập 31 - Trang 1202-1208 - 2022
Thanaphorn Rakkan, Nisa Paichid, Kanokphorn Sangkharak
The present study focused on the decolorization of methylene blue (MB) and the production of polyhydroxyalkanoate (PHA) by Enterobacter strain TS1L using PHA medium containing 50 mg/l of MB. The highest PHA production at 56.02 ± 6.26% of dry cell weight (% DCW) was observed after 24 h of cultivation, while the most effective dye decolorization at 92.57 ± 0.03% was observed after 72 h of cultivatio...... hiện toàn bộ
Dispersion and Reinforcing Potential of Carboxymethylated Nanofibrillated Cellulose Powders Modified with 1-Hexanol in Extruded Poly(Lactic Acid) (PLA) Composites
Journal of Polymers and the Environment - Tập 20 - Trang 1052-1062 - 2012
C. Eyholzer, P. Tingaut, T. Zimmermann, K. Oksman
Bionanocomposites of poly(lactic acid) (PLA) and chemically modified, nanofibrillated cellulose (NFC) powders were prepared by extrusion, followed by injection molding. The chemically modified NFC powders were prepared by carboxymethylation and mechanical disintegration of refined, bleached beech pulp (c-NFC), and subsequent esterification with 1-hexanol (c-NFC-hex). A solvent mix was then prepare...... hiện toàn bộ
Chitosan Functionalized Alunite as a Green Composite for Sorption and Preconcentration of Copper: From Parametric Optimization to Application
Journal of Polymers and the Environment - Tập 31 - Trang 1359-1372 - 2022
Sibel Tunali Akar, Dilek Tunc, Fatih Sayin, Tamer Akar
In this study, alunite was immobilized with chitosan to investigate the effective parameters for its adsorption and preconcentration potential for Cu2+ ions. After immobilization, the proposed composite’s adsorption efficiency increased by about 93% and 9%, respectively, when compared to alunite and chitosan components. The pseudo-second-order model better described Cu2+ adsorption. Equilibrium da...... hiện toàn bộ
Life Cycle Analysis of Extruded Films Based on Poly(lactic acid)/Cellulose Nanocrystal/Limonene: A Comparative Study with ATBC Plasticized PLA/OMMT Systems
Journal of Polymers and the Environment - Tập 26 - Trang 1891-1902 - 2017
R. Petrucci, E. Fortunati, D. Puglia, F. Luzi, J. M. Kenny, L. Torre
Life cycle analysis (LCA) of limonene plasticized poly(lactic acid) (PLA) films containing cellulose nanocrystals (CNC) extracted, by acid hydrolysis, from Phormium tenax leaf fibres, was assessed and compared with the results of acetyl tributyl citrate (ATBC) plasticized PLA films, having equivalent mechanical properties, containing organo-modified montmorillonite (OMMT). Eco-Indicator 99 tool ha...... hiện toàn bộ
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