Foaming of poly(vinyl alcohol)/microfibrillated cellulose composites

ZHAO Na; LI Qian; Chul B. Park

doi:10.11949/j.issn.0438-1157.20141004

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Foaming of poly(vinyl alcohol)/microfibrillated cellulose composites

更新时间：2025-12-10

- Foaming of poly(vinyl alcohol)/microfibrillated cellulose composites
- CIESC Journal Issue 2, Pages: 806-813(2015)
- 作者机构：
  
  1. 郑州大学微纳成型技术国家级国际联合研究中心, 微成型技术河南省重点实验室,河南,郑州,450001
  2. 郑州大学橡塑模具国家工程研究中心,河南,郑州,450002
  3. Microcellular Plastics Manufacturing Laboratory, University of Toronto,Toronto,Canada,M5S 3G8
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141004
  CLC： Q328.06
- Online First：05 February 2015，
  
  Published：05 February 2015
- 稿件说明：
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ZHAO Na, LI Qian, Chul B. Park. Foaming of poly(vinyl alcohol)/microfibrillated cellulose composites[J]. CIESC Journal, 2015, (2): 806-813.
DOI：

ZHAO Na, LI Qian, Chul B. Park. Foaming of poly(vinyl alcohol)/microfibrillated cellulose composites[J]. CIESC Journal, 2015, (2): 806-813. DOI： 10.11949/j.issn.0438-1157.20141004.

摘要

通过溶液浇铸法制备了聚乙烯醇(PVOH)/微纤化纤维素(MFC)复合薄膜材料

以超临界二氧化碳(scCO2)为物理发泡剂

采用间歇式降压法制备了一系列PVOH/MFC复合微发泡材料

主要讨论了在没有水分的影响下

不同发泡温度和时间以及MFC含量对PVOH/MFC复合微发泡材料的泡孔形貌、泡孔尺寸和泡孔密度的影响;同时

也对MFC的分散性和PVOH/MFC复合材料的流变性能和热性能对发泡行为的影响进行了研究。实验结果表明

均匀分散在PVOH基体中的MFC作为异相成核剂提高了气孔成核能力

且随着MFC含量的增加

泡孔尺寸降低

泡孔密度增大;并研究了发泡温度对PVOH/MFC复合材料的发泡形貌的影响

获得最优发泡温度。

Abstract

The effect of microfibrillated cellulose content and foaming temperature and time on the foaming behavior of dry poly(vinyl alcohol) (PVOH)/ microfibrillated cellulose (MFC) composites was investigated. PVOH/MFC composites were prepared by the solution film casting method and foamed via the batch depressurization foaming process with a physical blowing agent supercritical CO2. The rheological properties and thermal properties of PVOH/MFC composites were characterized. Microfibrillated cellulose fiber acted as nucleating agent during the foaming process

and there was an optimum processing temperature for achieving high-quality cellular morphology of the PVOH/MFC composites.

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