Polymers

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pH- and Thermo-Responsive Water-Soluble Smart Polyion Complex (PIC) Vesicle with Polyampholyte Shells
Polymers - Tập 14 Số 9 - Trang 1659 - 2022
Pham, Thu Thao, Pham, Tien Duc, Yusa, Shin-ichi
A diblock copolymer (P(VBTAC/NaSS)17-b-PAPTAC50; P(VS)17A50) composed of amphoteric random copolymer, poly(vinylbenzyl trimethylammonium chloride-co-sodium p-styrensunfonate) (P(VBTAC/NaSS); P(VS)) and cationic poly(3-(acrylamidopropyl) trimethylammonium chloride) (PAPTAC; A) block, and poly(acrylic acid) (PAAc49) were prepared via a reversible addition−fragmentation chain transfer radical polymer...... hiện toàn bộ
Cellulose-Cyclodextrin Co-Polymer for the Removal of Cyanotoxins on Water Sources
Polymers - Tập 11 Số 12 - Trang 2075
Diego Gomez‐Maldonado, Iris Beatriz Vega Erramuspe, Ilari Filpponen, Leena‐Sisko Johansson, Salvatore Lombardo, J. Y. Zhu, Wim Thielemans, María S. Peresin
With increasing global water temperatures and nutrient runoff in recent decades, the blooming season of algae lasts longer, resulting in toxin concentrations that exceed safe limits for human consumption and for recreational use. From the different toxins, microcystin-LR has been reported as the main cyanotoxin related to liver cancer, and consequently its abundance in water is constantly ...... hiện toàn bộ
Influence of Functionalization Degree on the Rheological Properties of Isocyanate-Functionalized Chitin- and Chitosan-Based Chemical Oleogels for Lubricant Applications
Polymers - Tập 6 Số 7 - Trang 1929-1947
R. Gallego, Mercedes González, Jesús F. Arteaga, C. Valencia, J.M. Franco
This work deals with the influence of functionalization degree on the thermogravimetric and rheological behaviour of NCO-functionalized chitosan- and chitin-based oleogels. Chitosan and chitin were functionalized using different proportions of 1,6-hexamethylene diisocyanate (HMDI) and subsequently dispersed in castor oil to promote the chemical reaction between the –NCO group of the modif...... hiện toàn bộ
Tunable Structure and Properties of Segmented Thermoplastic Polyurethanes as a Function of Flexible Segment
Polymers - Tập 11 Số 12 - Trang 1910
M. C. Asensio, V. Da Costa, Andrés Nohales, Otávio Bianchi, Clara M. Gómez
Segmented thermoplastic polyurethanes (PUs) were synthetized using macrodiols with different functional groups (carbonate, ester, and /or ether) as a segment with a molar mass of 1000 and 2000 g/mol, and 4,4’-diphenylmethane diisocyanate (MDI) and 1,4-butanediol as a rigid segment. The polyurethanes obtained reveal a wide variation of microphase separation degree that is correlated with me...... hiện toàn bộ
Microstructural Contributions of Different Polyolefins to the Deformation Mechanisms of Their Binary Blends
Polymers - Tập 12 Số 5 - Trang 1171
Astrid Van Belle, Ruben Demets, Nicolas Mys, Karen Van Kets, Jo Dewulf, Kevin M. Van Geem, Steven De Meester, Kim Ragaert
The mixing of polymers, even structurally similar polyolefins, inevitably leads to blend systems with a phase-separated morphology. Fundamentally understanding the changes in mechanical properties and occurring deformation mechanisms of these immiscible polymer blends, is important with respect to potential mechanical recycling. This work focuses on the behavior of binary blends of linear ...... hiện toàn bộ
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
Hierarchical Porous Polyamide 6 by Solution Foaming: Synthesis, Characterization and Properties
Polymers - Tập 10 Số 12 - Trang 1310
Liang Wang, Yu-Ke Wu, Fangfang Ai, Jie Fan, Zhaopeng Xia, Yong Liu
Porous polym er materials have received great interest in both academic and industrial fields due to their wide range of applications. In this work, a porous polyamide 6 (PA6) material was prepared by a facile solution foaming strategy. In this approach, a sodium carbonate (SC) aqueous solution acted as the foaming agent that reacted with formic acid (FA), generating CO2 and causing phase ...... 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
Hydrogel Based Sensors for Biomedical Applications: An Updated Review
Polymers - Tập 9 Số 8 - Trang 364
Javad Tavakoli, Youhong Tang
Biosensors that detect and convert biological reactions to a measurable signal have gained much attention in recent years. Between 1950 and 2017, more than 150,000 papers have been published addressing the applications of biosensors in different industries, but to the best of our knowledge and through careful screening, critical reviews that describe hydrogel based biosensors for biomedica...... hiện toàn bộ
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