A comparison of the network structure and inner dynamics of homogeneously and heterogeneously crosslinked PNIPAM microgels with high crosslinker content.

A comparison of the network structure and inner dynamics of homogeneously and heterogeneously crosslinked PNIPAM microgels with high crosslinker content.
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高交联剂含量均相和非均相交联 PNIPAM 微凝胶的网络结构和内部动力学比较

DOI:
10.1039/c8sm02141d
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发表时间:
2019
期刊:
影响因子:
3.4
通讯作者:
Wellert
Wellert
中科院分区:
化学2区
文献类型:
--
作者:
Lutzki;Houston;Radulescu;Pipich;Stingaciu;Kühnhammer;von Klitzing;Holderer;Wellert

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Poly(N-isopropylacrylamide) microgel particles were prepared via a “classical” surfactant-free precipitation polymerization and a continuous monomer feeding approach. It is anticipated that this yields microgel particles with different internal structures, namely a dense core with a fluffy shell for the classical approach and a more even crosslink distribution in the case of the continuous monomer feeding approach. A thorough structural investigation of the resulting microgels with dynamic light scattering, atomic force microscopy and small angle neutron scattering was conducted and related to neutron spin echo spectroscopy data. In this way a link between structural and dynamic features of the internal polymer network was made.
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