화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.57, 113-124, January, 2018
DOI10.1016/j.jiec.2017.08.014  Export Citation
Mechanical, thermal and swelling properties of cellulose nanocrystals/PVA nanocomposites membranes
Zaib Jahan1, 2, Muhammad Bilal Khan Niazi1, 2, and Oyvind Weiby Gregersen2, †
  • 1School of Chemical and Materials Engineering, National University of Sciences and Technology, Islamabad, Pakistan
  • 2Department of Chemical Engineering, Norwegian University of Science and Technology, Norway
E-mail:
Cellulose nanocrystals (CNC) have strong reinforcing properties when incorporated in a compatible polymer matrix. The study was conducted to investigate the effect of addition of different proportions of CNC on the mechanical, thermal and swelling properties of poly(vinyl alcohol) (PVA) nanocomposite membranes for biogas separation. The incorporation of CNC in PVA increased the crystallinity at all investigated relative humidities. No apparent trend is observed for mechanical properties for dry membranes (0% RH) with addition of CNC in PVA matrix. However, at 93% RH the elastic modulus increased 25 times with addition of CNC compared to pure PVA membranes. Moreover, tensile strength also showed twice the values at 53% RH and 93% RH after the addition of CNC. Membranes containing higher CNC content absorbed 9% less moisture. Swelling, thermal and mechanical properties indicate a good potential of CNC/PVA nanocomposite membranes for use in CO2 separation membranes.
Keywords:Crystalline nanocellulose;Poly(vinyl alcohol);Mechanical strength;Dynamic mechanical properties;Thermogravimetric analysis
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