<br>用于合成皮革制造的皮克林泡沫模板多孔水性聚氨酯薄膜,Langmuir

当前位置： X-MOL 学术 › Langmuir › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

用于合成皮革制造的皮克林泡沫模板多孔水性聚氨酯薄膜
Langmuir ( IF 3.7 ) Pub Date : 2024-02-22 , DOI: 10.1021/acs.langmuir.3c03514
Zhenghao Shi ₁ , Yifeng Sheng ₁ , Jianhui Wu ₂ , Jiwei Cui ₃ , Wei Lin ₂ , To Ngai ₁

Affiliation

具有经过验证的界面活性的水性聚氨酯（WPU）乳胶纳米颗粒可通过与疏水性气相二氧化硅颗粒（SP）的界面相互作用来稳定皮克林泡沫的空气-水界面。 Pickering 泡沫的流变特性是通过调整其 SP 含量来定制的，这会影响其成型性和稳定性。以WPU和SP稳定的Pickering泡沫为模板制备WPU-SP复合多孔膜。所制备的薄膜具有完整的开孔多孔结构，增加了其吸水性和水蒸气渗透性。将多孔薄膜作为中间层，通过四步“干燥法”制备合成革。与商业合成革相比，由WPU-SP复合多孔膜制成的中间层的实验室合成革表现出更丰富的多孔结构、对织物基材的润湿性良好、更厚的多孔层和更高的水蒸气渗透性。这项工作为制备 WPU-SP Pickering 泡沫提供了一种新颖且简便的方法。此外，该泡沫有潜力作为可持续材料，用于制造由 WPU 制成的多孔结构合成革，该合成革可用作溶剂型合成革的替代品。

"点击查看英文标题和摘要"

Porous Waterborne Polyurethane Films Templated from Pickering Foams for Fabrication of Synthetic Leather

Waterborne polyurethane (WPU) latex nanoparticles with proven interfacial activity were utilized to stabilize air–water interfaces of Pickering foams through interfacial interaction with hydrophobic fumed silica particles (SPs). The rheological properties of the Pickering foam were tailored through adjustment of their SP content, which influenced their formability and stability. A Pickering foam stabilized with WPU and SPs was used as a template to prepare a WPU–SP composite porous film. The as-prepared film had intact open-cell porous structures, which increased its water absorption and water-vapor permeability. The porous film was used as a middle layer in the preparation of synthetic leather via a four-step “drying method”. Compared with commercial synthetic leather, the lab-made synthetic leather with a middle layer made of the WPU–SP composite porous film exhibited a richer porous structure, acceptable wetting on a fabric substrate, a thicker porous layer, and higher water-vapor permeability. This work provides a novel and facile approach for preparing WPU–SP Pickering foams. Furthermore, the foams have the potential to function as a sustainable material for creating a porous-structured synthetic leather made from WPU, which may be utilized as an alternative to solvent-based synthetic leather.

更新日期：2024-02-22

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11