Pervaporation separation of binary organic-aqueous liquid mixtures using crosslinked PVA membranes. I. Characterization of the reaction between PVA and PAA

Journal Article · Wed Oct 20 00:00:00 EDT 1993 · Journal of Applied Polymer Science; (United States)

DOI:https://doi.org/10.1002/app.1993.070500413· OSTI ID:5733716

Rhim, Jiwon; Lee, Kewho ^[1]; Sohn, Minyoung; Joo, Hyeokjong ^[2]

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1. Korea Research Inst. of Chemical Technology, Taejon (Korea, Republic of). Membranes and Separation Lab.
2. Chungnam National Univ., Taejon (Korea, Republic of). Dept. of Polymer Science and Engineering

For the purpose of the water-selective membrane material development for pervaporation separation, poly(vinyl alcohol) (PVA) was crosslinked with a low molecular weight of poly(acrylic acid) (PAA). The crosslinking reactions between PVA and PAA were characterized through IR spectroscopy, differential scanning calorimetry (DSC), and tensile tests when varying the reaction conditions, that is, time, temperature, amounts of cross-linking agents, PAA. It was found that the crosslinking reaction was fast: in other words, that the reaction mainly occurred at the initial step of each reaction condition. The best reaction conditions for preparing the crosslinked PVA membranes were found to be: reaction time not over 1 h, reaction temperature in the range of 150-180 C. PAA contents of 15-20 wt% were found satisfactory with respect to the application areas.

• OSTI ID: 5733716
• Journal Information: Journal of Applied Polymer Science; (United States), Vol. 50:4; ISSN 0021-8995
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
MEMBRANES
ENERGY EFFICIENCY
ORGANIC COMPOUNDS
SEPARATION PROCESSES
ORGANIC POLYMERS
CROSS-LINKING
FABRICATION
AQUEOUS SOLUTIONS
MIXTURES
PVA
ALCOHOLS
CHEMICAL REACTIONS
DISPERSIONS
EFFICIENCY
HYDROXY COMPOUNDS
POLYMERIZATION
POLYMERS
POLYVINYLS
SOLUTIONS
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
360601 - Other Materials- Preparation & Manufacture