polyethylene

The recent research progress in characterization of long and short branched chains in polyethylene were reviewed.

综述了支链聚乙烯分子中长支链和短支链的表征方法,评价了已报道的各种表征方法的优缺点,指出了 目前在表征方法上的新要求。

Long-chain branched polyethylene was prepared by a bianary catalyst systemCat 1:bis(α- naphthalidine)-butanediimine) NiBr_2 and Cat 2:bis(2,6-diisopropylphenyl)-acenaphthenediimine NiBr_2.

13C-NMR、GPC、DSC、WAXD、DMA结果表明此复式催化剂催化乙烯聚合可得到分子量较高、分子量分布较窄的长支链聚乙烯弹性体。

The molecular segregation effects on the crystallization, melting and crystal morphologies of metallocene SCBPE have been investigated with DSC and TEM.

以美国Exxon公司生产的茂金属短支链聚乙烯 (SCBPE)为研究对象 ,用DSC热分级方法研究了不同支链含量聚乙烯的支化非均匀性 ,并用TEM表征茂金属聚乙烯在不同条件下熔体结晶的形态 。

Synthesis of partly hydrolyzed branched polyacrylamide initiated by Cu(Ⅲ) complex ion through homopolymerization and cohydrolysis of acrylamide;

以Cu(Ⅲ)络离子为引发剂合成带支链的聚丙烯酰胺——丙烯酰胺均聚共水解

Rheological property of the aqueous solution of branched partly hydrolyzed polyacrylamide;

带支链的部分水解聚丙烯酰胺溶液的流变性

Branched polyacrylamide with average molecular weight up to 6.

为提高聚丙烯酰胺(HPAM)的性能,以Cu(Ⅲ)络离子为引发剂,以一定物质的量配比的丙烯酰胺与丙烯酸钠混合水溶液,通过共聚反应合成了带支链的部分水解HPAM。