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首页> 外文期刊>e-Polymers >Macroporous polymer beads derived from a novel coporogen of polyethylene/dichlorobenzene
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Macroporous polymer beads derived from a novel coporogen of polyethylene/dichlorobenzene

机译：衍生自新型聚乙烯/二氯苯助孔剂的大孔聚合物珠

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Macroporous poly(divinylbenzene) (PDVB) beads were prepared by traditional suspension polymerization in the presence of dichlorobenzene (DCB) and polyethylene (PE) as coporogen. Two types of PE with different molecular weights were used as polymer porogen, and the weight percent of PE in DCB varied from 0 to 8.0 wt%. Effects of PE concentration and PE molecular weight on the pore structure of PDVB beads were investigated. As expected, the highest surface area was achieved by the beads prepared with DCB as the sole porogen. Applying coporogen with PE with low molecular weight (LPE) content, the surface area of PDVB beads declined because of early phase separation induced by the cooperation of LPE and DCB. However, the value increased abruptly when 5 wt% LPE in DCB was used as coporogen. Subsequently, the values again decreased when LPE amount further increased. Overall, the molecular weight of PE and the concentration of PE in coporogen had a significant effect on the pore structure and surface morphology of PDVB beads.
机译：在二氯苯（DCB）和聚乙烯（PE）作为致孔剂的存在下，通过传统的悬浮聚合法制备了大孔聚二乙烯基苯（PDVB）珠。两种具有不同分子量的PE用作聚合物致孔剂，并且DCB中PE的重量百分比为0至8.0 wt％。研究了PE浓度和PE分子量对PDVB微珠孔结构的影响。如所预期的，通过用DCB作为唯一的致孔剂制备的珠粒获得了最大的表面积。使用具有低分子量（LPE）含量的PE的Coporogen，由于LPE和DCB的协同作用引起的早期相分离，PDVB珠的表面积下降。但是，当将DCB中5 wt％的LPE用作致孔剂时，该值突然增加。随后，当LPE量进一步增加时，该值再次降低。总体而言，PE的分子量和在致孔剂中的PE浓度对PDVB珠的孔结构和表面形态有重要影响。

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