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用于滚塑工艺的聚（ε-己内酯）-中空玻璃微球复合材料的结晶行为

Crystallization Behavior of Poly(ε-Caprolactone)-Hollow Glass Microspheres Composites for Rotational Molding Technology.

作者信息

Vignali Adriano, Utzeri Roberto, Canetti Maurizio, Bertini Fabio

机构信息

Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (SCITEC)-CNR, Via A. Corti 12, 20133 Milano, Italy.

Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (SCITEC)-CNR, Via De Marini 6, 16149 Genova, Italy.

出版信息

Polymers (Basel). 2022 Oct 14;14(20):4326. doi: 10.3390/polym14204326.

DOI:10.3390/polym14204326
PMID:36297902
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9609941/
Abstract

Composites suitable for rotational molding technology based on poly(ε-caprolactone) (PCL) and filled with hollow glass microspheres (HGM) or functionalized hollow glass microspheres (HGMf) were prepared via melt-compounding. The functionalization of glass microspheres was carried out by a silanization treatment in order to improve the compatibility between the inorganic particles and the polymer matrix and achieve a good dispersion of glass microspheres in the matrix and an enhanced filler-polymer adhesion. The crystallization behavior of materials was studied by DSC under isothermal and non-isothermal conditions and the nucleating effect of the glass microspheres was proven. In particular, the presence of silanized glass microspheres promoted faster crystallization rates and higher nucleation activity, which are enhanced by 75% and 50%, respectively, comparing neat PCL and the composite filled with 20 wt% HGMf. The crystalline and supermolecular structure of PCL and composites crystallized from the melt was evaluated by WAXD and SAXS, highlighting differences in terms of crystallinity index and structural parameters as a function of the adopted crystallization conditions.

摘要

通过熔融共混制备了基于聚（ε-己内酯）（PCL）并填充有中空玻璃微球（HGM）或功能化中空玻璃微球（HGMf）的适用于滚塑成型技术的复合材料。玻璃微球的功能化通过硅烷化处理来实现，以改善无机颗粒与聚合物基体之间的相容性，并使玻璃微球在基体中实现良好分散以及增强填料与聚合物之间的粘附力。通过差示扫描量热法（DSC）在等温及非等温条件下研究了材料的结晶行为，并证实了玻璃微球的成核作用。特别是，硅烷化玻璃微球的存在促进了更快的结晶速率和更高的成核活性，与纯PCL以及填充20 wt% HGMf的复合材料相比，结晶速率和成核活性分别提高了75%和50%。通过广角X射线衍射（WAXD）和小角X射线散射（SAXS）对从熔体中结晶的PCL及其复合材料的晶体和超分子结构进行了评估，突出了结晶度指数和结构参数随所采用的结晶条件的变化而产生的差异。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/faaaf5927cb2/polymers-14-04326-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/5a83e37ed56d/polymers-14-04326-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/12c7283e7607/polymers-14-04326-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/e535108da7d2/polymers-14-04326-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/769f85e9f4f3/polymers-14-04326-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/a76ce47e873a/polymers-14-04326-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/fa4b8b718903/polymers-14-04326-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/c013c19ad5f6/polymers-14-04326-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/17dc34c4c204/polymers-14-04326-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/df57f091e972/polymers-14-04326-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/faaaf5927cb2/polymers-14-04326-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/5a83e37ed56d/polymers-14-04326-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/12c7283e7607/polymers-14-04326-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/e535108da7d2/polymers-14-04326-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/769f85e9f4f3/polymers-14-04326-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/a76ce47e873a/polymers-14-04326-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/fa4b8b718903/polymers-14-04326-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/c013c19ad5f6/polymers-14-04326-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/17dc34c4c204/polymers-14-04326-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/df57f091e972/polymers-14-04326-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2cb2/9609941/faaaf5927cb2/polymers-14-04326-g010.jpg

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本文引用的文献

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Utilization of microalgae residue and isolated cellulose nanocrystals: A study on crystallization kinetics of poly(ɛ-caprolactone) bio-composites.利用微藻残渣和分离出的纤维素纳米晶体：聚（己内酯）生物复合材料结晶动力学研究。
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Rotational Molding of Linear Low-Density Polyethylene Composites Filled with Wheat Bran.填充麦麸的线性低密度聚乙烯复合材料的滚塑成型
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