eprintid: 16251
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/62/51
datestamp: 2023-12-19 03:22:47
lastmod: 2023-12-19 03:22:47
status_changed: 2023-12-19 03:05:55
type: article
metadata_visibility: show
creators_name: Ding, S.H.
creators_name: Oh, P.C.
creators_name: Mukhtar, H.
creators_name: Jamil, A.
title: Fabrication of NH2-MIL-125 (Ti)/Polyvinylidene fluoride hollow fiber mixed matrix membranes for removal of environmentally hazardous CO2 gas
ispublished: pub
keywords: Carbon dioxide; Contact angle; Defects; Elastic moduli; Fluorine compounds; Gas permeable membranes; Hydrogen bonds; Morphology; Spinning (fibers); Tensile strength, CH 4; Filler loading; Gas separations; Hollow fiber; Hollow fiber mixed matrix membrane; Loading percentages; Mixed-matrix membranes; NH2-MIL-125 (ti); Polyvinylidene fluorides; Structural defect, Fillers
note: cited By 3
abstract: Improper pairing of filler and polymer together with inappropriate filler loadings into polymer matrix may lead to structural defects such as large aggregations and interface void formations. Subsequently, the structural defects may sacrifice the selectivity of CO2 over CH4, which was unfavorable. In the current work, NH2-MIL-125 (Ti) (MIL = Material Institute Lavoisier), which possesses NH2-groups and theoretically capable of forming strong hydrogen bonding with F-groups of polyvinylidene fluoride (PVDF), was selected to spin hollow fiber mixed matrix membranes (HFMMMs). Besides, NH2-MIL-125 (Ti) can interact better with CO2 over CH4 via quadrupole moment, and NH2-groups also aid in CO2 selectivity due to its high CO2 adsorption capability. The HFMMMs were spun using a dry-wet spinning technique of filler loadings percentage ranging from 1 to 3 wt percent (wt). The effect of filler and loadings percentage over HFMMMs properties, including contact angle, mechanical strength, thermal stability and cross-sectional morphology was investigated. The compatibility at interface of filler and polymer was observed to be good, and dispersion was observed to be acceptable up to 2 wt filler loadings. However, apparent aggregation was observed beyond this point. The wt of Ti, O, and N elements were found to increase from 0.72 to 2.05, 3.27 to 4.53, and 0.52 to 1.55, respectively, with increasing filler loading into HFMMMs. Subsequently, PVDF-2 membrane displayed the highest CO2/CH4 ideal selectivity with contact angle of 83.44 ± 1.45, ultimate tensile strength (UTS) of 1.33, 29.12 Young's Modulus, and 72.2 elongation at break. Therefore, optimizing loading percentage and selecting appropriate filler are considered practical methods to ensure good morphology and better hazardous CO2 removal. © 2022 Elsevier B.V.
date: 2022
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138518345&doi=10.1016%2fj.jngse.2022.104794&partnerID=40&md5=c44d10a46577fcdac9266a2b82e1d860
id_number: 10.1016/j.jngse.2022.104794
full_text_status: none
publication: Journal of Natural Gas Science and Engineering
volume: 107
refereed: TRUE
issn: 18755100
citation:   Ding, S.H. and Oh, P.C. and Mukhtar, H. and Jamil, A.  (2022) Fabrication of NH2-MIL-125 (Ti)/Polyvinylidene fluoride hollow fiber mixed matrix membranes for removal of environmentally hazardous CO2 gas.  Journal of Natural Gas Science and Engineering, 107.   ISSN 18755100