scholarly journals Synthesis of poly(Asparagine-co-phenylalanine) copolymers, analogy with thermosensitive poly(acrylamide-co-styrene) copolymers and formation of PEGylated nanoparticles

2020 ◽  
Vol 140 ◽  
pp. 110033
Author(s):  
Amaury Bossion ◽  
Julien Nicolas
Keyword(s):  
Styrene Copolymers ◽  
Pegylated Nanoparticles ◽  
Poly Acrylamide

Postmortem and in situ TEM methods to study the mechanism of failure in controlled-morphology high-impact polystrene resin

1996 ◽  
Vol 54 ◽  
pp. 178-179
Author(s):  
R. C. Cieslinski ◽  
M. T. Dineen ◽  
J. L. Hahnfeld
Keyword(s):  
Poisson Ratio ◽  
Acrylonitrile Butadiene Styrene ◽  
High Impact ◽  
In Situ Tem ◽  
Styrene Copolymers ◽  
Controlled Morphology ◽  
Point Bend ◽  
Mechanism Of Failure ◽  
Impact Energies

Advanced Styrenic resins are being developed throughout the industry to bridge the properties gap between traditional HIPS (High Impact Polystyrene) and ABS (Acrylonitrile-Butadiene-Styrene copolymers) resins. These new resins have an unprecedented balance of high gloss and high impact energies. Dow Chemical's contribution to this area is based on a unique combination of rubber morphologies including labyrinth, onion skin, and core-shell rubber particles. This new resin, referred as a controlled morphology resin (CMR), was investigated to determine the toughening mechanism of this unique rubber morphology. This poster will summarize the initial studies of these resins using the double-notch four-point bend test of Su and Yee, tensile stage electron microscopy, and Poisson Ratio analysis of the fracture mechanism.

Advances in the Initiation System and Synthesis Methods of Cationic Poly-acrylamide: A Review

2016 ◽  
Vol 13 (2) ◽  
pp. 109-117 ◽  
Author(s):  
Chuanliang Zhao ◽  
Huaili Zheng ◽  
Yuxin Zhang ◽  
Jinsong Guo ◽  
Yongjun Sun ◽  
...  
Keyword(s):  
Synthesis Methods ◽  
Initiation System ◽  
Poly Acrylamide

Absorption of oxygen into Ellis liquid

1987 ◽  
Vol 52 (12) ◽  
pp. 2859-2864
Author(s):  
František Potůček ◽  
Jiří Stejskal
Keyword(s):  
Aqueous Solutions ◽  
Power Flow ◽  
Flow Model ◽  
Poly Acrylamide

The authors studied absorption of oxygen by aqueous solutions of poly(acrylamide) which showed a pseudoplastic behaviour. The results were described by equations involving dimensionless criteria modified for the Ellis flow model. The equations were compared with those published for the power flow model.

An alginate-poly(acrylamide) hydrogel with TGF-β3 loaded nanoparticles for cartilage repair: Biodegradability, biocompatibility and protein adsorption

2021 ◽  
Vol 172 ◽  
pp. 381-393
Author(s):  
Ecem Saygili ◽  
Elif Kaya ◽  
Esra Ilhan-Ayisigi ◽  
Pelin Saglam-Metiner ◽  
Emine Alarcin ◽  
...  
Keyword(s):  
Protein Adsorption ◽  
Cartilage Repair ◽  
Poly Acrylamide

scholarly journals Sustainable Myrcene-Based Elastomers via a Convenient Anionic Polymerization

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 838
Author(s):  
David Hermann Lamparelli ◽  
Magdalena Maria Kleybolte ◽  
Malte Winnacker ◽  
Carmine Capacchione
Keyword(s):  
Anionic Polymerization ◽  
Sodium Hydride ◽  
Reactivity Ratios ◽  
Molecular Weights ◽  
Styrene Copolymers ◽  
Wide Range ◽  
Elastomeric Materials ◽  
Complete Study ◽  
Anionic Copolymerization ◽  
Trialkylaluminum Derivatives

Soluble heterocomplexes consisting of sodium hydride in combination with trialkylaluminum derivatives have been used as anionic initiating systems at 100 °C in toluene for convenient homo-, co- and ter-polymerization of myrcene with styrene and isoprene. In this way it has been possible to obtain elastomeric materials in a wide range of compositions with interesting thermal profiles and different polymeric architectures by simply modulating the alimentation feed and the (monomers)/(initiator systems) ratio. Especially, a complete study of the myrcene-styrene copolymers (PMS) was carried out, highlighting their tapered microstructures with high molecular weights (up to 159.8 KDa) and a single glass transition temperature. For PMS copolymer reactivity ratios, rmyr = 0.12 ± 0.003 and rsty = 3.18 ± 0.65 and rmyr = 0.10 ± 0.004 and rsty = 3.32 ± 0.68 were determined according to the Kelen–Tudos (KT) and extended Kelen–Tudos (exKT) methods, respectively. Finally, this study showed an easy accessible approach for the production of various elastomers by anionic copolymerization of renewable terpenes, such as myrcene, with commodities.

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