Dispersion of minor PS-MAMA component in polymer melt under two mixing modes

ZHANG Cailiang; JIN Zuyu; GU Xueping; FENG Lianfang

doi:10.11949/j.issn.0438-1157.20151243

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Dispersion of minor PS-MAMA component in polymer melt under two mixing modes

更新时间：2025-12-10

- Dispersion of minor PS-MAMA component in polymer melt under two mixing modes
- CIESC Journal Issue 2, Pages: 485-493(2016)
- 作者机构：
  
  浙江大学化学工程与生物工程学院, 化学工程联合国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151243
  CLC： Q317.2
- Online First：05 February 2016，
  
  Published：05 February 2016
- 稿件说明：
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ZHANG Cailiang, JIN Zuyu, GU Xueping, et al. Dispersion of minor PS-MAMA component in polymer melt under two mixing modes[J]. CIESC Journal, 2016, (2): 485-493.
DOI：

ZHANG Cailiang, JIN Zuyu, GU Xueping, et al. Dispersion of minor PS-MAMA component in polymer melt under two mixing modes[J]. CIESC Journal, 2016, (2): 485-493. DOI： 10.11949/j.issn.0438-1157.20151243.

摘要

通过苯乙烯(St) 和3-异丙烯基-α

α-二甲基苄基异氰酸酯(TMI) 共聚制备了共聚物P(St-co-TMI)

然后与9-(N-甲氨基甲基)蒽(MAMA)反应合成了具有示踪特性的聚苯乙烯大分子示踪剂(PS-MAMA)。采用PS-MAMA作为微量组分

在自制的间歇混合器中考察了两种混合模式下其在聚苯乙烯(PS)和聚甲基丙烯酸甲酯(PMMA)中的分散行为。结果表明:对于左右两个转子同时异向转动的匀速混合模式

虽然可以在较短时间内使微量组分在转子壁面和混合腔体内壁之间形成稳定的层状分布

但是随着混合时间的延长

层与层之间的混合较慢;而对于交替异向转动的方波混合模式

尽管在混合初期

层内和层间的浓度分布都不均匀

但是流场的交替变化加快了微量组分PS-MAMA 在聚合物熔体中的分散。因此

方波混合模式的混合效果要优于匀速混合模式的。

Abstract

This work synthesized a macromolecular fluorescent-tracer (PS-MAMA) via the copolymerization of styrene (St) and 3-isopropenyl-α

α-dimethylbenzyl isocyanate (TMI) followed by reacting with 9-(methylaminomethyl) anthrance. The dispersion behaviors of PS-MAMA as a minor component in polystyrene (PS) and polymethylmethacrylate (PMMA) were investigated in a homemade batch mixer under two mixing modes. Results showed that for the steady mixing mode in which two rotors rotated together in an opposite direction

the minor component could form a stable laminar flow in a shorter time but the mixing between those layers was very slow; while for the square-wave mixing mode in which two rotors rotated alternately in an opposite direction

the PS-MAMA dispersion in the layer and between layers were poor in the initial mixing stage but the alternate rotation of two rotors can facilitate the exchange between the layers and accelerate the dispersion of minor component PS-MAMA in polymer melt. Therefore

the mixing ability of the square-wave mixing mode was better than that of the steady mixing mode.

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