Rheology and melt strength of long chain branching polypropylene prepared by reactive extrusion with various peroxides
Rheology and melt strength of long chain branching polypropylene prepared by reactive extrusion with various peroxides
复制标题
各种过氧化物反应挤出制备长链支化聚丙烯的流变学和熔体强度
DOI：
10.1002/pen.21544
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发表时间：
2010-02
影响因子：
3.2
通讯作者：
Huang, Han-Xiong
中科院分区：
文献类型：
--
作者：
Su, Feng-Hua;Huang, Han-Xiong
以1，6-己二醇二芳酸酯为多官能团单体，在多种氧化物存在下，通过熔融接枝反应，在挤出机中制备了长链支化聚丙烯。傅立叶变换红外光谱和流变特性表明，接枝反应在线型聚丙烯(PP)上增加了长支链。与原始PP相比，支化PP具有较高的熔体强度、较低的熔体流动指数和较高的结晶温度。改性样品的支化数与其熔体粘弹性和熔体强度的改善程度相吻合。改性聚苯硫醚的支化程度可以通过所用过氧化氢的性质和结构来控制。较低的分解温度和分解后较稳定的自由基促进了支化反应，从而使改性PPS具有较高的支化度和熔体强度。波兰姆。英语。《科学》，2009。©2009塑料工程师学会
Long Chain Branching Polypropylenes were prepared in an extruder by a melt grafting reaction in the presence of various peroxides and a polyfunctional monomer of 1,6-hexanediol diarylate. Fourier Transformed Infrared spectra and the rheological characteristics indicated that the grafting reaction added long branched chains to linear polypropylene (PP). In comparison to the initial PP, the branched samples exhibited higher melt strength, lower melt flow index, and enhancement of crystallization temperature. The branching number of the modified samples agreed well with their melt viscoelasticity and the improved degree of their melt strength. The branching level in modified PPs could be controlled by the property and structure of the peroxide used. Peroxides with lower decomposition temperature and more stable radicals after decomposition promoted the branching reaction, leading to the modified PPs with higher branching level and melt strength. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers
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影响因子：
5.5
作者：
M. Sugimoto;Yuichi Masubuchi;J. Takimoto;K. Koyama
通讯作者：
M. Sugimoto;Yuichi Masubuchi;J. Takimoto;K. Koyama
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Hatzikiriakos, SG
影响因子：
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作者：
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通讯作者：
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影响因子：
5.5
作者：
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通讯作者：
C. Tsenoglou;A. Gotsis