耐湿生物降解的粉泡用聚乙 (PVB) 和酸盐增强
Apoorva Kulkarni1, Jakob Emrich1, Ramani Narayan1
1Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, MI 48824, USA.
Polymers
|December 17, 2024
概括
经过改进的粉泡被开发出来,具有增强的防潮性和水性,使用聚乙烯和酸盐. 这些可持续泡保持生物降解性,为包装和绝缘应用提供解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 生物材料工程 生物材料工程
背景情况:
- 基于粉的泡是有希望的可持续材料,但通常会受到湿度敏感性的影响.
- 开发耐水性和疏水性粉泡对于扩大它们的应用范围至关重要.
研究的目的:
- 优化一阶段挤出发泡工艺,生产不溶于水,耐潮的粉泡.
- 调查聚乙烯 (PVB) 作为塑化剂和素作为核化剂对泡性能的影响.
- 评估改性泡的疏水性,生物降解性和适用于包装和绝缘的适用性.
主要方法:
- 使用ZSK-30双螺杆挤出机的一步挤出发泡过程.
- 挤出参数的优化 (温度,螺丝配置,模具直径,含水量,料率).
- 泡属性的表征,包括密度,膨胀比,接触角度,细胞结构 (CLSM) 和生物降解性 (ISO 14852).
主要成果:
- 优化的工艺产生了粉泡,密度为21公斤/立方米,膨胀比为38.7.
- 添加PVB和奇托桑显著增强了疏水性 (接触角度高达101.5°) 和水不可溶性.
- 同焦激光扫描显微镜 (CLSM) 证实了基托桑向泡表面的迁移,增强了疏水性.
- 经过修改的泡显示出出色的生物降解性 (大约1. 80%在80天内) 尽管增强了耐湿性.
结论:
- 优化的挤出发泡工艺成功生产了耐水性和疏水性粉泡.
- PVB和酸盐有效地提高了泡的性能,创造了一种可持续的材料,具有耐湿性和生物降解性的双重优势.
- 这些改性粉泡适用于要求高的包装和绝缘应用,需要长期耐湿性.
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