Supramolecular network polymers formed from polyamidine and carboxy-terminated telechelic poly(n-butyl acrylate) via amidinium-carboxylate salt bridges
Supramolecular network polymers formed from polyamidine and carboxy-terminated telechelic poly(n-butyl acrylate) via amidinium-carboxylate salt bridges
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DOI：
10.1002/pola.28082
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发表时间：
2016-07
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通讯作者：
Yoshio Furusho;T. Endo;Keiko Higaki;Katsuhiro Kaetsu;Y. Higaki;K. Kojio;A. Takahara
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文献类型：
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作者：
Yoshio Furusho;T. Endo;Keiko Higaki;Katsuhiro Kaetsu;Y. Higaki;K. Kojio;A. Takahara
以端羧基遥爪聚丙烯酸正丁酯和主链上含有N，N′-二取代乙脒基的线型聚脒为原料，制备了脒-羧酸盐桥基超分子网络聚合物.红外光谱分析表明，盐桥的形成是由于三维网络的形成。实际上，对于含有等摩尔量的羧基和脒基的共混物没有观察到流动性，其在−5 °C下显示出约1 MPa的高G′值。为了比较，使用线性聚乙烯亚胺代替聚脒制备了由羧酸铵盐交联的超分子网络聚合物。具有等摩尔量的羧基和仲氨基的共混物显示出液体般的流动性，在−5 °C下的G '值约为0.01 MPa，这归因于一定量的羧基以其游离形式保留的事实，如FTIR分析所证明的。© 2016 Wiley Periodicals，Inc. J.波利姆科学，A部分：聚合物2016，54，2148-2155
We have prepared the amidinium-carboxylate salt bridge-based supramolecular network polymers from a carboxy-terminated telechelic poly(n-butyl acrylate) and a linear polyamidine having N,N′-di-substituted acetamidine group in the main chain. FTIR measurements indicated that the salt bridge was attributed to the three-dimensional network formation. Virtually, no fluidity was observed for the blend containing equimolar amounts of the carboxyl group and the amidine group, which showed a high G′ value of about 1 MPa at −5 °C. For comparison, the supramolecular network polymers crosslinked by ammonium-carboxylate salt were prepared using a linear polyethyleneimine instead of the polyamidine. The blend with equimolar amounts of the carboxyl group and the secondary amino group showed liquid-like fluidity with a G′ value of about 0.01 MPa at −5 °C, which was attributed to the fact that a certain amount of the carboxyl group remained as its free form, as evidenced by FTIR analysis. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2016, 54, 2148–2155