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各种多面体低聚倍半硅氧烷对聚（ε-己内酯）纳米复合材料的粘弹性、热性能和结晶的影响。

The Effect of Various Polyhedral Oligomeric Silsesquioxanes on Viscoelastic, Thermal Properties and Crystallization of Poly(ε-caprolactone) Nanocomposites.

作者信息

Lipińska Magdalena

机构信息

Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 16 Street, 90-537 Łódź, Poland.

出版信息

Polymers (Basel). 2022 Nov 23;14(23):5078. doi: 10.3390/polym14235078.

DOI:10.3390/polym14235078
PMID:36501477
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9737336/
Abstract

Polyhedral oligomeric silsesquioxane POSS nanoparticles can be applied as reinforcing additives modifying various properties of biodegradable polymers. The effects of aminopropylisobutyl POSS (amine-POSS), trisilanolisooctyl-POSS (HO-POSS) and glycidyl-POSS (Gly-POSS) on the viscoelastic, thermal properties and crystallization of biodegradable poly(ε-caprolactone) PCL were studied. The analysis of the viscoelastic properties at ambient temperature indicated that aminopropylisobutyl POSS (amine-POSS) and glycidyl-POSS (Gly-POSS) enhanced the dynamic mechanical properties of PCL. The increase in the storage shear modulus ' and loss modulus ″ was observed. The plasticizing effect of trisilanolisooctyl POSS (HO-POSS) due to the presence of long isoctyl groups was confirmed. As a result, the crystallization of PCL was facilitated and the degree of crystallinity of increased up to 50.9%. The damping properties and the values of tan δ for PCL/HO-POSS composition increased from 0.052 to 0.069. The TGA results point out the worsening of the PCL thermal stability, with lower values of T, T and T. Both HO-POSS and Gly-POSS facilitated the relaxation of molten PCL. The presence of Gly-POSS influenced the changes that occurred in the viscoelastic properties of the molten PCL due to the thermo-mechanical degradation of the material; a positive impact was observed.

摘要

多面体低聚倍半硅氧烷POSS纳米粒子可作为增强添加剂，用于改变可生物降解聚合物的各种性能。研究了氨丙基异丁基POSS（胺基-POSS）、三硅醇异辛基-POSS（羟基-POSS）和缩水甘油基-POSS（缩水甘油基-POSS）对可生物降解聚（ε-己内酯）PCL的粘弹性、热性能和结晶性能的影响。对室温下粘弹性性能的分析表明，氨丙基异丁基POSS（胺基-POSS）和缩水甘油基-POSS（缩水甘油基-POSS）增强了PCL的动态力学性能。观察到储能剪切模量'和损耗模量″增加。由于存在长的异辛基，证实了三硅醇异辛基POSS（羟基-POSS）的增塑作用。结果，PCL的结晶得到促进，结晶度提高到50.9%。PCL/羟基-POSS组合物的阻尼性能和tanδ值从0.052增加到0.069。热重分析（TGA）结果表明PCL的热稳定性变差，T、T和T的值较低。羟基-POSS和缩水甘油基-POSS都促进了熔融PCL的松弛。缩水甘油基-POSS的存在影响了由于材料的热机械降解而在熔融PCL的粘弹性性能中发生的变化；观察到了积极影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/0cf5210fc0ed/polymers-14-05078-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/379b689f7589/polymers-14-05078-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/1692a068d675/polymers-14-05078-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/d44dfcc3a165/polymers-14-05078-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/46a46e3c9fdd/polymers-14-05078-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/a5ea7ff7e205/polymers-14-05078-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/a5803ce99750/polymers-14-05078-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/b9e6ab5d60c4/polymers-14-05078-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/f67d8768357a/polymers-14-05078-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/0cf5210fc0ed/polymers-14-05078-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/355f10e2f535/polymers-14-05078-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/682ee2a4a966/polymers-14-05078-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/379b689f7589/polymers-14-05078-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/1692a068d675/polymers-14-05078-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/d44dfcc3a165/polymers-14-05078-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/46a46e3c9fdd/polymers-14-05078-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/a5ea7ff7e205/polymers-14-05078-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/a5803ce99750/polymers-14-05078-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/b9e6ab5d60c4/polymers-14-05078-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/f67d8768357a/polymers-14-05078-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8a36/9737336/0cf5210fc0ed/polymers-14-05078-g011.jpg

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