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合理化聚偏二氟乙烯（PVDF）流变性能对纳米二氧化硅的依赖性

Rationalizing the Dependence of Poly (Vinylidene Difluoride) (PVDF) Rheological Performance on the Nano-Silica.

作者信息

Cui Yi, Sui Yang, Wei Peng, Lv Yinan, Cong Chuanbo, Meng Xiaoyu, Ye Hai-Mu, Zhou Qiong

机构信息

Department of Materials Science and Engineering, New Energy and Material College, China University of Petroleum-Beijing, Beijing 102249, China.

Beijing Key Laboratory of Failure, Corrosion, and Protection of Oil/Gas Facilities, China University of Petroleum-Beijing, Beijing 102249, China.

出版信息

Nanomaterials (Basel). 2023 Mar 18;13(6):1096. doi: 10.3390/nano13061096.

DOI:10.3390/nano13061096
PMID:36985990
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10056420/
Abstract

Research on the rheological performance and mechanism of polymer nanocomposites (PNCs), mainly focuses on non-polar polymer matrices, but rarely on strongly polar ones. To fill this gap, this paper explores the influence of nanofillers on the rheological properties of poly (vinylidene difluoride) (PVDF). The effects of particle diameter and content on the microstructure, rheology, crystallization, and mechanical properties of PVDF/SiO were analyzed, by TEM, DLS, DMA, and DSC. The results show that nanoparticles can greatly reduce the entanglement degree and viscosity of PVDF (up to 76%), without affecting the hydrogen bonds of the matrix, which can be explained by selective adsorption theory. Moreover, uniformly dispersed nanoparticles can promote the crystallization and mechanical properties of PVDF. In summary, the viscosity regulation mechanism of nanoparticles for non-polar polymers, is also applicable to PVDF, with strong polarity, which is of great value for exploring the rheological behavior of PNCs and guiding the process of polymers.

摘要

聚合物纳米复合材料（PNCs）的流变性能及机理研究主要集中在非极性聚合物基体上，而对强极性聚合物基体的研究较少。为填补这一空白，本文探讨了纳米填料对聚偏氟乙烯（PVDF）流变性能的影响。通过透射电子显微镜（TEM）、动态光散射（DLS）、动态热机械分析（DMA）和差示扫描量热法（DSC）分析了粒径和含量对PVDF/SiO微观结构、流变学、结晶和力学性能的影响。结果表明，纳米粒子可大幅降低PVDF的缠结程度和粘度（高达76%），且不影响基体的氢键，这可用选择性吸附理论来解释。此外，均匀分散的纳米粒子可促进PVDF的结晶和力学性能。综上所述，纳米粒子对非极性聚合物的粘度调节机制同样适用于强极性的PVDF，这对于探索PNCs的流变行为及指导聚合物加工过程具有重要价值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/c708cb58f668/nanomaterials-13-01096-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/606239025307/nanomaterials-13-01096-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/679ca92c465d/nanomaterials-13-01096-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/a3a3ccfcdf9e/nanomaterials-13-01096-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/5e110870594c/nanomaterials-13-01096-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/4f45bfb0ce3d/nanomaterials-13-01096-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/ac382b02aa48/nanomaterials-13-01096-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/5383cdb4b9b9/nanomaterials-13-01096-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/bf915a80a077/nanomaterials-13-01096-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/72aa30b3c55a/nanomaterials-13-01096-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/c708cb58f668/nanomaterials-13-01096-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/606239025307/nanomaterials-13-01096-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/679ca92c465d/nanomaterials-13-01096-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/a3a3ccfcdf9e/nanomaterials-13-01096-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/5e110870594c/nanomaterials-13-01096-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/4f45bfb0ce3d/nanomaterials-13-01096-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/ac382b02aa48/nanomaterials-13-01096-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/5383cdb4b9b9/nanomaterials-13-01096-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/bf915a80a077/nanomaterials-13-01096-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/72aa30b3c55a/nanomaterials-13-01096-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2393/10056420/c708cb58f668/nanomaterials-13-01096-g009.jpg

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