نتایج جستجو برای: in situ atrp

تعداد نتایج: 16977393  

Journal: :Journal of the American Chemical Society 2002
Jia-Yu Wang Wei Chen An-Hua Liu Guang Lu Gang Zhang Jun-Hu Zhang Bai Yang

A promising strategy for the controlled synthesis of inorganic/polymeric nanocomposites may be sustained by fabricating cross-linked PbS nanoparticles/polymer composite thin films through combining surface-initiated atom transfer radical polymerization (ATRP) and gas/solid reaction. The introduction of Pb ions through the extension of surface-initiated ATRP to the monomers containing metal ions...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زابل - دانشکده کشاورزی 1393

این پژوهش به منظور تعیین ارزش غذایی علوفه نی پرتوتابی شده با روش کیسههای نایلونی و تولید گاز انجام شد. برای این منظور نمونه ها از مزارع سیستان به طور تصادفی سیستماتیک جمع¬آوری و پس از خشک¬کردن برای پرتوتابی ، سه نمونه 750 گرمی از این خوراک در کیسه های پلاستیکی بسته بندی و در سه سطح 100، 200 و 300 کیلوگری پرتوتابی شد. بعد از پرتوتابی، مقداری از نمونه¬ها با آسیاب مجهز به غربال 2 میلیمتری آسیاب شد...

Journal: :Journal of Chemical Education 2023

This study reported the application of an interactive Open Education Resource, namely, open virtual experiment simulator education tool (OVESET), in teaching kinetics atom transfer radical polymerization (ATRP) a polymer science classroom. The OVESET ATRP kinetic aims at improving students’ inductive reasoning skills. Students were encouraged to perform experiments systematically examine influe...

Journal: :Bioresources and Bioprocessing 2022

Abstract Atom-transfer radical polymerization (ATRP) is a well-known technique for controlled polymer synthesis. However, the ATRP usually employed toxic heavy metal ionas as catalyst and was susceptible to molecular oxygen, which made it should be conducted under strictly anoxic condition. Conducting ambient biocompatible conditions major challenge. In this study, cytochrome C explored an effi...

Journal: :Angewandte Chemie 2021

Copolymere sind die Antwort auf limitierten Eigenschaften von Homopolymeren. Um gesamte Vielfalt der verfügbaren Monomere nutzen zu können, werden derzeit Katalysatoren untersucht, in mehr als einem Polymerisationsmechanismus aktiv sind. Eisen-Guanidin-Katalysatoren haben sich bei ROP Lactid außerordentlich erwiesen und zeigen jetzt ihre Vielseitigkeit, indem sie auch ATRP Styrol katalysieren. ...

Journal: :ACS applied materials & interfaces 2012
Ahmed Aied Yu Zheng Abhay Pandit Wenxin Wang

Cationic polymers with various structures have been widely investigated in the areas of medical diagnostics and molecular biology because of their unique binding properties and capability to interact with biological molecules in complex biological environments. In this work, we report the grafting of a linear cationic polymer from an atom transfer radical polymerization (ATRP) initiator bound t...

2017
Liang Ma Jian Zhu Xiaodong Chen

Surface initiated atom transfer radical polymerization (SI-ATRP) is one of the most versatile technique to modify the surface properties of material. Recent developed metal free SIATRP makes such technique more widely applicable. Herein photo-induced metal-free SI-ATRP of methacrylates, such as methyl methacrylate, N-isopropanyl acrylamide, and N,Ndimethylaminoethyl methacrylate, on the surface...

Journal: :Journal of polymer science 2021

Atom transfer radical polymerization (ATRP) is one of the most popular advanced techniques in macromolecular science, allowing synthesis tailor-made polymers with controlled molecular weight, architecture, composition, and functionality. The combination ATRP ring-opening (ROP) provides a straightforward route for preparation exhibiting both targeted well-defined features biodegradability, which...

Journal: :international journal of occupational hygiene 0
mohsen aliabadi department of occupational hygiene, faculty of public health, hamadan university of medical sciences, hamadan, iran. rostam golmohammadi department of occupational hygiene, faculty of public health and center for health researches, hamadan university of medical sciences, hamadan, iran. abdolreza ohadi department of mechanical engineering, amirkabir university of technology, tehran, iran.

sound power is considered as an excellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. this parameter can be determined by sound pressure or intensity based methods in real conditions of workrooms. this paper aims empirically to compare these in situ methods in relation to a typical industrial machine located in workroom in terms o...

Journal: :علوم و تکنولوژی پلیمر 0
محمد برمر مهدی باریکانی مجتبی فریدون نیا

in this work, a thermoplastic polyurethane elastomer (tpue) model based on polytetramethylene glycol, toluene diisocyanate and 1,4-butanediol was selected and synthesized. according to this model two types of polyurethane nanocomposites were prepared by in situ polymerization and melt intercalation procedures. the organo-modified nanoclay was used in nanocomposites samples in 0.4 weight percent...

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