Polymers

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Determination of Frequency-Dependent Shear Modulus of Viscoelastic Layer via a Constrained Sandwich Beam
Polymers - Tập 14 Số 18 - Trang 3751
Ludi Kang, C. T. Sun, Haosheng Liu, Bilong Liu
Viscoelastic material can significantly reduce the vibration energy and radiated noise of a structure, so it is widely used in lightweight sandwich structures. The accurate and efficient determination of the frequency-dependent complex modulus of viscoelastic material is the basis for the correct analysis of the vibro-acoustic behavior of sandwich structures. Based on the behavior of a san...... hiện toàn bộ
Thermal Stability, Smoke Density, and Flame Retardance of Ecotype Bio-Based Flame Retardant Agricultural Waste Bagasse/Epoxy Composites
Polymers - Tập 13 Số 17 - Trang 2977
Shang‐Hao Liu, Cing‐Yu Ke, Chin‐Lung Chiang
In the study, agricultural waste bagasse was used as a bio-based flame retardant for reducing the flammability of epoxy. Specifically, an interpenetrating network (IPN) was formed through a ring opening reaction between the hydroxyl functional group of bagasse and the epoxy group of triglycidyl isocyanurate (TGIC), forming Bagasse@TGIC. Next, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-o...... hiện toàn bộ
Lightweight High-Performance Polymer Composite for Automotive Applications
Polymers - Tập 11 Số 2 - Trang 326
Valentina Volpe, Sofia Lanzillo, Giovanni Affinita, Beniamino Villacci, Innocenzo Macchiarolo, Roberto Pantani
The automotive industry needs to produce plastic products with high dimensional accuracy and reduced weight, and this need drives the research toward less conventional industrial processes. The material that was adopted in this work is a glass-fiber-reinforced polyamide 66 (PA66), a material of great interest for the automotive industry because of its excellent properties, although being l...... hiện toàn bộ
Recent Advances in Biochar Polymer Composites
Polymers - Tập 14 Số 12 - Trang 2506
Mattia Bartoli, Rossella Arrigo, Giulio Malucelli, Alberto Tagliaferro, Donatella Duraccio
“Biochar” (BC) is the solid residue recovered from the thermal cracking of biomasses in an oxygen-poor atmosphere. Recently, BC has been increasingly explored as a sustainable, inexpensive, and viable alternative to traditional carbonaceous fillers for the development of polymer-based composites. In fact, BC exhibits high thermal stability, high surface area, and electrical conductivity; m...... hiện toàn bộ
Chemically Dual-Modified Biochar for the Effective Removal of Cr(VI) in Solution
Polymers - Tập 14 Số 1 - Trang 39
Juanjuan Yang, Yu Sheng, Yan Yue, Wenfei Liu, Quande Che, Honglei Chen, Hongfang Ma
Here, a dual-modification strategy using KMnO4 (potassium permanganate) and AlCl3·6H2O (aluminum chloride, hexahydrate) as co-modifiers to improve the Cr(VI) removal capacity of K2CO3 activated biochar is introduced. As a result, the dual-modified biochar with KMnO4 and AlCl3·6H2O has the calculated adsorption energy of −0.52 eV and −1.64 eV for HCrO4−, and −0.21 eV and −2.01 eV for Cr2O72...... hiện toàn bộ
Effect of Plasticizer Type and Concentration on Tensile, Thermal and Barrier Properties of Biodegradable Films Based on Sugar Palm (Arenga pinnata) Starch
Polymers - Tập 7 Số 6 - Trang 1106-1124
M. L. Sanyang, S.M. Sapuan, Mohammad Jawaid, М. Р. Ишак, J. Sahari
The use of starch based films as a potential alternative choice to petroleum derived plastics is imperative for environmental waste management. This study presents a new biopolymer (sugar palm starch) for the preparation of biodegradable packaging films using a solution casting technique. The effect of different plasticizer types (glycerol (G), sorbitol (S) and glycerol-sorbitol (GS) combi...... hiện toàn bộ
Performance Investigation and Cost–Benefit Analysis of Recycled Tire Polymer Fiber-Reinforced Cemented Paste Backfill
Polymers - Tập 14 Số 4 - Trang 708
Zhuoqun Yu, Yongyan Wang, Jianguang Li
To alleviate the environmental problems caused by scrap tire and tailings disposal, the performance of recycled tire polymer fiber (RTPF)-reinforced cemented paste backfill (CPB) was investigated. Ordinary CPB, commercial poly-propylene fiber (CPPF) and reinforced CPB were also investigated for comparison. Slump tests, unconfined compression tests and a cost–benefit analysis were conducted...... hiện toàn bộ
Fructose-Based Production of Short-Chain-Length and Medium-Chain-Length Polyhydroxyalkanoate Copolymer by Arctic Pseudomonas sp. B14-6
Polymers - Tập 13 Số 9 - Trang 1398
Taekjib Choi, Hwang‐Phill Kim, Hun‐Suk Song, Sun‐Mi Lee, Sol Lee Park, Hye Soo Lee, Hyun‐Joong Kim, Shashi Kant Bhatia, Ranjit Gurav, Kwon‐Young Choi, Yoo Kyung Lee, Yung‐Hun Yang
Arctic bacteria employ various mechanisms to survive harsh conditions, one of which is to accumulate carbon and energy inside the cell in the form of polyhydroxyalkanoate (PHA). Whole-genome sequencing of a new Arctic soil bacterium Pseudomonas sp. B14-6 revealed two PHA-production-related gene clusters containing four PHA synthase genes (phaC). Pseudomonas sp. B14-6 produced poly(6% 3-hyd...... hiện toàn bộ
Isolation of Microbulbifer sp. SOL66 with High Polyhydroxyalkanoate-Degrading Activity from the Marine Environment
Polymers - Tập 13 Số 23 - Trang 4257
Sol Lee Park, Jang Yeon Cho, Su Hyun Kim, Shashi Kant Bhatia, Ranjit Gurav, See‐Hyoung Park, Kyungmoon Park, Yung‐Hun Yang
Having the advantage of eco-friendly decomposition, bioplastics could be used to replace petroleum-based plastics. In particular, poly(3-hydroxybutyrate) (PHB) is one of the most commercialized bioplastics, however, necessitating the introduction of PHB-degrading bacteria for its effective disposal. In this study, Microbulbifer sp. SOL66 (94.18% 16S rRNA with similarity to Microbulbifer hy...... hiện toàn bộ
Adsorption Characteristics of Polymer Solutions on Media Surfaces and Their Main Influencing Factors
Polymers - Tập 13 Số 11 - Trang 1774
Shijie Zhu, Zhongbin Ye, Zhezhi Liu, Zhonghua Chen, Jun Li, Zuping Xiang
In practical applications, the chemical and physical adsorption of a polymer solution greatly affects its action mode and effect. Understanding the adsorption mechanism and its influencing factors can help to optimize the application mode and ensure application efficiency. Three types of polymer solutions—partially hydrolyzed polyacrylamide (HPAM), hydrophobically associating polymer (AP-P...... hiện toàn bộ
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