2012年2月23日 · A novel method for the synthesis of a well-defined water-soluble polymer P(PEGMA) with lower molecular weight distributions (Mw/Mn ∼ 1.2) was demonstrated successfully via bulk AGET ATRP, catalyzed b...

大家好，初步接触ATRP聚合，用CuBr为催化剂，联吡啶为配体，加Cu2+，在甲醇水中做聚合，60度表面引发聚合，PEGMA单体分子量400（用碱洗除去阻聚剂，并氯仿萃取后水相反萃取，）问题：聚合后，确实接枝成功，但体系中有白色沉淀，怀疑是氯仿引发聚合的产品 ...

ATRP was used to grow PEGMA from chymotrypsin-appended initiators, and ε-caprolactone/PEGMA hyperbranched stars exhibiting significantly reduced adverse effects. The water-soluble polymeric analog of DMSO, poly(2-(methylsulfinyl)ethyl acrylate) (polyMSEA), prepared by ATRP is also envisaged as a promising PEG alternative.

2013年10月4日 · We report here a study of the grafting of poly (ethylene glycol)methyl ether methacrylate (PEGMA) from different macroinitiator films incorporating initiators that are suitable for ATRP. PEG-like polymers such as these are often used in biomedical applications for their biocompatibility and low fouling properties [18], [19], [20], [21], [22].

Aqueous-phase ATRP has been recently explored to obtain polymer–protein conjugates through the polymerization of poly(ethylene glycol) methyl ether methacrylate (PEGMA) macromonomers, grafted from recombinant hGH and trypsin.

Atom transfer radical polymerization (ATRP) of PEGMAs with various molecular weights is investigated by using these macroinitiators. It is found that CuBr is an inefficient ATRP catalyst, while CuCl leads to high, nearly complete conversions of the PEGMA macromonomers.

Atom transfer radical polymerization (ATRP) is one of the most successful techniques for the preparation of well-defined polymers with controllable molecular weights, narrow molecular weight distributions, specific macromolecular architectures, and precisely designed functionalities. ATRP usually involves transition-metal complex as catalyst.

2015年9月21日 · Copper-free PPEGMA macromolecules are obtained with high conversion, controlled molecular weight, and polydispersity index compared with standard copper-based ATRP. The facile preparation and availability of the catalyst, together with its expected low toxicity, represent clear advantages for the synthesis of PPEGMA-based materials for ...

在这项工作中，成功地进行了水溶性单体聚（乙二醇）单甲醚甲基丙烯酸酯（PEGMA）与低毒铁催化剂体系（包括六水合氯化铁和三苯基膦）的活性自由基聚合。 研究了反应温度和催化剂浓度对PEGMA聚合反应的影响。 聚合动力学表现出“活性” /受控自由基聚合的特征。 例如，M n，GPC所得聚合物的分子量随单体转化率线性增加。 在还原剂Fe（0）线或抗坏血酸的存在下，可以获得更快的PEGMA聚合。 在使用Fe（0）线作为还原剂的情况下，在90°C的反应时间80分钟内，单 …

Poly(poly(ethyleneglycol) monomethacrylate) (P(PEGMA))-grafted magnetic nanoparticles (MNPs) were successfully prepared via a solvent-free atom transfer radical polymerization (ATRP) method. The macroinitiators were immobilized on the surface of 6.4+/-0.8 nm Fe(3)O(4) nanoparticles via effective lig …