NDLI: Amphiphobic fluorinated polyurethane composite microfibrous membranes with robust waterproof and breathable performances

Content Provider	Royal Society of Chemistry (RSC)
Author	Ge, Jianfeng Ding, Bin Yang, Jianmao Wang, Jialin Sun, Gang Cui, Lingxiao Si, Yang Fu, Fen Yu, Jianyong
Copyright Year	2013
Abstract	Amphiphobic, microporous polyurethane (PU) composite microfibrous membranes exhibiting robust waterproof and breathable performances were prepared by the introduction of a novel synthesized fluorinated PU (FPU) containing head perfluoroalkane segment. By employing the FPU incorporation, the pristine PU membranes were endowed with the superhydrophobicity with water contact angle of 156° and the oleophobicity with oil contact angle of 145°. The role of FPU for the tuning of the morphology, surface wettability and mechanical property of resultant membranes were discussed, and a plausible two-step break mechanism upon the external stress is proposed. The quantitative fractal dimension analysis using N2 adsorption method has confirmed the correlation between the hierarchical roughness and amphiphobicity. Furthermore, the as-prepared membranes exhibited high water resistance (39.3 kPa), good air permeability (8.46 L m−2 s−1) and water vapor transmittance (0.384 kg m−2 h−1), and comparable tensile strength (10 MPa), suggesting their use as promising materials for a variety of potential applications in protective clothing, bioseparation, membrane distillation, tissue engineering and catalyst carriers, etc., and also provided new insight into the design and development of functional microfibrous membranes through FPU incorporation.
Starting Page	2248
Ending Page	2255
Page Count	8
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	3
Issue Number	7
Journal	RSC Advances
DOI	10.1039/c2ra22111j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Wetting Tissue engineering Membrane distillation Ultimate tensile strength FPU Fluorocarbon Contact angle Pascal (unit) Water contact Fractal dimension Adsorption Floating-point unit Polyurethane
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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