Volume 1, Issue 3
Temperature-sensitive Composite Membranes with "Double Switch" on Water Vapor Permeability

Lijing Wang

Journal of Fiber Bioengineering & Informatics,1 (2008), pp. 233-238

Published online: 2008-01

Preview Purchase PDF 0 1112
Export citation
  • Abstract

Temperature-sensitive polymer membranes were prepared by combination of shape memory hydrophilic polyurethane (SMPU) and thermo-sensitive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NiPAAm-co-SA)] hydrogel micro-particles through composite coating method. These two intelligent polymer components endowed the composite membranes with “double switch” on the water vapor permeability. Poly(NiPAAm-co-SA) hydrogel micro-particles exhibited a reversible volume transition at lower critical solution temperature (LCST) around 34-36°C in the experiment. The size of gel particles varied more than 10-fold between temperature above and below LCST. It is likely acted as a sensor of temperature and as an switch to regulate the water vapor permeability of composite membranes. Moreover, there was also a dramatic increase in water vapor permeability (WVP) with an increase in temperature from 35 to 40°C for the shape memory hydrophilic polyurethane basement membranes. Two different procedures for WVP test were employed to simulate different application situations of the composite membranes. The temperature-sensitive water vapor permeability of composite polymer membranes was investigated by varying the content of hydrogel micro-particles. All of the temperaturesensitive membranes could have water vapor permeability controlled in response to temperature changes.

  • Keywords

temperature-sensitive composite membranes double switch water vapor permeability

  • AMS Subject Headings

  • Copyright

COPYRIGHT: © Global Science Press

  • Email address
  • BibTex
  • RIS
  • TXT
@Article{JFBI-1-233, author = {Lijing Wang}, title = {Temperature-sensitive Composite Membranes with "Double Switch" on Water Vapor Permeability}, journal = {Journal of Fiber Bioengineering and Informatics}, year = {2008}, volume = {1}, number = {3}, pages = {233--238}, abstract = {Temperature-sensitive polymer membranes were prepared by combination of shape memory hydrophilic polyurethane (SMPU) and thermo-sensitive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NiPAAm-co-SA)] hydrogel micro-particles through composite coating method. These two intelligent polymer components endowed the composite membranes with “double switch” on the water vapor permeability. Poly(NiPAAm-co-SA) hydrogel micro-particles exhibited a reversible volume transition at lower critical solution temperature (LCST) around 34-36°C in the experiment. The size of gel particles varied more than 10-fold between temperature above and below LCST. It is likely acted as a sensor of temperature and as an switch to regulate the water vapor permeability of composite membranes. Moreover, there was also a dramatic increase in water vapor permeability (WVP) with an increase in temperature from 35 to 40°C for the shape memory hydrophilic polyurethane basement membranes. Two different procedures for WVP test were employed to simulate different application situations of the composite membranes. The temperature-sensitive water vapor permeability of composite polymer membranes was investigated by varying the content of hydrogel micro-particles. All of the temperaturesensitive membranes could have water vapor permeability controlled in response to temperature changes.}, issn = {2617-8699}, doi = {https://doi.org/10.3993/jfbi12200809}, url = {http://global-sci.org/intro/article_detail/jfbi/5045.html} }
TY - JOUR T1 - Temperature-sensitive Composite Membranes with "Double Switch" on Water Vapor Permeability AU - Lijing Wang JO - Journal of Fiber Bioengineering and Informatics VL - 3 SP - 233 EP - 238 PY - 2008 DA - 2008/01 SN - 1 DO - http://doi.org/10.3993/jfbi12200809 UR - https://global-sci.org/intro/article_detail/jfbi/5045.html KW - temperature-sensitive KW - composite membranes KW - double switch KW - water vapor permeability AB - Temperature-sensitive polymer membranes were prepared by combination of shape memory hydrophilic polyurethane (SMPU) and thermo-sensitive poly(N-isopropylacrylamide-co-sodium acrylate) [poly(NiPAAm-co-SA)] hydrogel micro-particles through composite coating method. These two intelligent polymer components endowed the composite membranes with “double switch” on the water vapor permeability. Poly(NiPAAm-co-SA) hydrogel micro-particles exhibited a reversible volume transition at lower critical solution temperature (LCST) around 34-36°C in the experiment. The size of gel particles varied more than 10-fold between temperature above and below LCST. It is likely acted as a sensor of temperature and as an switch to regulate the water vapor permeability of composite membranes. Moreover, there was also a dramatic increase in water vapor permeability (WVP) with an increase in temperature from 35 to 40°C for the shape memory hydrophilic polyurethane basement membranes. Two different procedures for WVP test were employed to simulate different application situations of the composite membranes. The temperature-sensitive water vapor permeability of composite polymer membranes was investigated by varying the content of hydrogel micro-particles. All of the temperaturesensitive membranes could have water vapor permeability controlled in response to temperature changes.
Lijing Wang. (1970). Temperature-sensitive Composite Membranes with "Double Switch" on Water Vapor Permeability. Journal of Fiber Bioengineering and Informatics. 1 (3). 233-238. doi:10.3993/jfbi12200809
Copy to clipboard
The citation has been copied to your clipboard