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Modified Densified Waste of Expanded Polystyrene and Its Blends With Polyamide 6
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2020-02-03 , DOI: 10.1002/pen.25349
Volodymyr Levytskyi 1, 2 , Volodymyr Moravskyi 1 , Andrii Masyuk 1 , Rafał Kuzioła 2 , Katarzyna Grąz 2 , Ulyana Khromyak 3
Affiliation  

The regularities of expanded polystyrene (EPS) waste modified by polyvinylpyrrolidone (PVP) with the simultaneous gas release in various solvents were revealed. The upper sorption limit depends on the nature of the solvent, the concentration and molecular mass of the PVP, the temperature of the process, and the apparent density of the EPS. It was established that the sorption limit of PVP increases with increasing of its concentration in the system and decreases with molecular mass increasing. Based on XRD and FTIR analyses, it was determined that materials based on polyamide 6 and EPS modified by PVP have an increased crystallinity degree by 10–15%, a smaller average crystallite size and higher technological compatibility. The addition of PVP‐modified EPS contributes to the increase of the yield strength of polyamide 6 by about 5%–10%. The increase of the Vicat softening point by 5–8 K and the surface hardness by 25–30 MPa of materials based on polyamide 6 and modified polystyrene was investigated. It is caused by the redistribution of intermolecular bonds between the components of the blend under by the effect of a uniformly distributed PVP in the EPS resulting in increased compatibility between the components and the compacted structure. POLYM. ENG. SCI., 60:935–943, 2020. © 2020 Society of Plastics Engineers

中文翻译:

膨化聚苯乙烯及其与聚酰胺6的共混物的改性致密化废料

揭示了聚乙烯吡咯烷酮(PVP)改性的膨胀聚苯乙烯(EPS)废料在各种溶剂中同时释放气体的规律。吸附上限取决于溶剂的性质,PVP的浓度和分子量,过程的温度以及EPS的表观密度。已经确定,PVP的吸附极限随其在系统中浓度的增加而增加而随分子量的增加而降低。根据XRD和FTIR分析,可以确定基于PVP改性的聚酰胺6和EPS的材料的结晶度提高了10-15%,平均微晶尺寸更小,技术兼容性更高。添加PVP改性的EPS有助于聚酰胺6的屈服强度提高5%–10%。研究了基于聚酰胺6和改性聚苯乙烯的材料的维卡软化点提高了5–8 K,表面硬度提高了25–30 MPa。这是由于在EPS中均匀分布的PVP的作用下,共混物各组分之间的分子间键的重新分布引起的,从而导致组分与压实结构之间的相容性提高。POLYM。ENG。SCI。,60:935–943,2020.©2020塑料工程师协会 这是由于在EPS中均匀分布的PVP的作用下,共混物各组分之间的分子间键的重新分布引起的,从而导致组分与压实结构之间的相容性提高。POLYM。ENG。SCI。,60:935–943,2020.©2020塑料工程师协会 这是由于在EPS中均匀分布的PVP的作用下,共混物各组分之间的分子间键的重新分布引起的,从而导致组分与压实结构之间的相容性提高。POLYM。ENG。SCI。,60:935–943,2020.©2020塑料工程师协会
更新日期:2020-02-03
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