نتایج جستجو برای: poly methyl metacrylate

تعداد نتایج: 185798  

Journal: :Polimeros-ciencia E Tecnologia 2023

Plastic wastes are generally not easily degradable under the action of environmental components. They very much resistant to microbial attack too. These non-biodegradable plastics accumulate over a longer period time on earth leading pollution. However, this may be avoided by using biodegradable polymers. Thus demand for preparation polymers has grown up. In recent years, researchers have devel...

2002
C. Petrov

The introduction of high molecular weight poly(methyI methacrylate) or poly(butadiene-co-acrylonitrile) into ethyl 2-cyanoacrylate produced viscous adhesives with a homogeneous or heterogeneous structure after cure. Steel joints bonded with these adhesives are shown to have improved tensile shear strength, deformability and stress relaxation of bonds compared with pure cyanoacrylate adhesive. P...

Journal: :Chemical science 2015
Kai Pahnke Josef Brandt Ganna Gryn'ova Peter Lindner Ralf Schweins Friedrich Georg Schmidt Albena Lederer Michelle L Coote Christopher Barner-Kowollik

We report the investigation of fundamental entropic chain effects that enable the tuning of modular ligation chemistry - for example dynamic Diels-Alder (DA) reactions in materials applications - not only classically via the chemistry of the applied reaction sites, but also via the physical and steric properties of the molecules that are being joined. Having a substantial impact on the reaction...

Journal: :Journal of Polymer Science: Polymer Physics Edition 1978

Journal: :Chimica techno acta 2021

Chitosan and poly(methyl methacrylate) (PMMA) composites were synthesized by polymerization with heating mechanochemical method. The obtained polymer analyzed the ATR FT-IR spectroscopy presence of intermolecular hydrogen bonds hydrophobic interactions in formation PMMA chitosan was shown.

2013
Brieuc Guillerm Sophie Monge Vincent Lapinte Jean-Jacques Robin

In this contribution, we report on the self assembly in water of original amphiphilic poly(2-methyl-2oxazoline)-b-poly(tert-butyl acrylate) copolymers, synthesized by copper catalyzed azide-alkyne cycloaddition (CuAAC) reaction. For such purpose, polyoxazoline (poly(2-methyl-2-oxazoline)) and polyacrylate (poly(tert-butyl acrylate)) are first prepared by cationic ring-opening polymerization (CR...

Journal: :Journal of the Royal Society, Interface 2011
Manuel L B Palacio Scott R Schricker Bharat Bhushan

The adhesive interactions of block copolymers composed of poly(methyl methacrylate) (PMMA)/poly(acrylic acid) (PAA) and poly(methyl methacrylate)/poly(2-hydroxyethyl methacrylate) (PHEMA) with the proteins fibronectin, bovine serum albumin and collagen were studied by atomic force microscopy. Adhesion experiments were performed both at physiological pH and at a slightly more acidic condition (p...

Journal: :Journal of the American Chemical Society 2004
Gonglu Tian Yujie Lu Bruce M Novak

The helix-sense selective polymerization of achiral monomers by homochiral catalysts was investigated. Polymerization of chiral carbodiimides (N-(R)-2,6-(dimethylheptyl)-N'-phenylcarbodiimide) by achiral catalysts yields polymers that undergo mutorotation at elevated temperatures, thus illustrating that these chains are formed under kinetic rather than thermodynamic control. Building on this ob...

2012
Chang-Yong Nam Qin Wu Dong Su Chien-yang Chiu Noah J. Tremblay Colin Nuckolls Charles T. Black

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