화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.34, No.5, 1416-1434, May, 2017
DOI10.1007/s11814-017-0021-5  Export Citation
Separation of tetrahydrofuran using RSM optimized accelerator-sulfur-filler of rubber membranes: Systematic optimization and comprehensive mechanistic study
Mrinmoy Karmakar, Manas Mahapatra, and Nayan Ranjan Singha†
  • Department of Polymer Science and Technology, Advanced Polymer Laboratory, Government College of Engineering and Leather Technology (Post-Graduate), Maulana Abul Kalam Azad University of Technology, Salt Lake, Kolkata - 700106, West Bengal, India
E-mail:
Response surface methodology (RSM) optimized, semi efficiently vulcanized (SEV) and filled organophilic composite natural rubber (NR) membranes of varying physichochemical interactions were reported for sorption-diffusion-permeation based separation of tetrahydrofuran (THF) from binary aqueous mixtures. RSM was used to obtain optimum accelerator/sulfur (A/S) ratio required for crosslinking of nine membranes to find excellent balance of mechanical properties. These membranes were characterized by FESEM, AFM, EDX, XRD, DTG, TGA, DSC and FTIR. Vulcanized products formed from several crosslinking precursors of NR via radical and/or ionic paths were incorporated to impart an unambiguous reaction mechanism. RSM was also used to obtain optimum conditions (temperature/concentration/filler) for total flux (TF) and separation factor (SF). Membrane intrinsic properties, like partial permeabilities (PPs), selectivities and diffusion coefficients (DCs) were also studied. NRSEV12 membrane showed excellent balance of TF (24.01±0.7 g m-2 h-1) and SF (118.8±4.16) at 0.97 wt% of THF in feed and 35 °C.
Keywords:Accelerator/Sulfur Ratio of Vulcanization;Advanced Characterization;Systematic Optimization of Propertyperformance;Intrinsic Properties of Composite Membranes;Reaction Mechanism
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