1) Long Chain Branch
长支链
1.
Synthesis and Characterization of Long Chain Branched Polypropylene;
长支链聚丙烯的制备与表征
2) long chain branching
长链支化
1.
High-melt-strength polypropylene is achieved with modified PP through long chain branching.
通过长链支化来改性PP ,从而得到高熔体强度的PP。
2.
Long chain branching LLDPE was prepared via initiating the long chain branching reaction of matrix LLDPE by preirradiated LLDPE.
利用预辐照线型低密度聚乙烯(rLLDPE)引发基体LLDPE的长链支化反应,制备出长链支化LLDPE。
3) long chain branching
长链支化度
1.
Determination of long chain branching in cis-1,4polybutadiene rubber by gel permeation chromatography with double detector combination;
用双检测器凝胶渗透色谱法测定顺丁橡胶长链支化度
4) distributions of the chain lengths
外支链链长分布
1.
In order to control retrogradation of instant rice during storage,the degree of gelatinization was used to investigate the effects of water content,time,distributions of the chain lengths and amylases on ret- rogradation of instant rice.
针对即食方便米饭在贮存过程中易老化的问题,以糊化度为实验指标,研究水分含量、贮存时间、淀粉外支链链长分布对其老化的影响。
2.
The influence of water content, time, distributions of the chain lengths and amylases on retrogradation and sensory quality of instant rice were investigated in order to get the best processing and quality standard of instant rice.
首先,针对即食方便米饭在贮存过程中易老化的问题,先以糊化度为实验指标,研究水分质量分数、贮存时间、淀粉外支链链长分布对其老化的影响。
5) Long-chain branched polyethylene
长支链聚乙烯
1.
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。
6) long chain branched
长链支化结构
1.
High melt strength polypropylene (HMSPP) with long chain branched struc-ture and low gel fraction was achieved with 60Co-γirradiation in the presence of di-functional monomers.
研究结果表明,在普通聚丙烯中加入双官能度敏化剂SR213,再经60Co-γ射线辐射后,可以制得具有长链支化结构、微凝胶含量的高熔体强度聚丙烯。
补充资料：长支链
分子式：
CAS号：
性质：支化高分子中，支链根据其长短分为长分支链和短分支链。长支链的长度与主链相当，短支链的长度则近似于较长的侧基。长支链影响高分子的流动性与加工性能，对力学性能影响也较大。如星型聚合物、梳型聚合物、接枝共聚物等。在大多数情况下，长支链是在聚合反应时通过链转移而形成。低密度聚乙烯、聚乙酸乙烯酯、聚苯乙烯和聚氯乙烯等经常含有长支链。
CAS号：
性质：支化高分子中，支链根据其长短分为长分支链和短分支链。长支链的长度与主链相当，短支链的长度则近似于较长的侧基。长支链影响高分子的流动性与加工性能，对力学性能影响也较大。如星型聚合物、梳型聚合物、接枝共聚物等。在大多数情况下，长支链是在聚合反应时通过链转移而形成。低密度聚乙烯、聚乙酸乙烯酯、聚苯乙烯和聚氯乙烯等经常含有长支链。
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参考词条