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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2330
Title: Synthesis and characterization of styrene-co-divinylbenzene-graft-linseed oil by free radical polymerization
Authors: Sharma V.
Banait J.S.
Larock R.C.
Kundu, Patit Paban
Published in: Express Polymer Letters
Abstract: A variety of opaque white to light yellow polymeric material have been prepared by two methods, one copolymerization of styrene (ST), divinylbenzene (DVB), and grafting of linseed oil (LIN), and the second involves the copolymerization of the same comonomers with pre-reacted (with initiator) linseed oil. All of the reactant mixtures in different concentrations start to solidify at 100°C and give rise to a solid crosslinked polymer at 130°C. These polymeric materials contain approximately 30 to 74% of crosslinked materials. Their 1H NMR spectra indicate that the polymeric samples contain both soft oily and hard aromatic segments. The insoluble material left after soxhlet extraction contains finely distributed micropores. The heat deflection temperatures (HDT) of the polymer samples range from 26 to 44°C. The glass transition temperature for different linseed oil polymer samples ranges from 66 to 147°C (from dynamic mechanical analysis) and 158 to 182"C (from differential scanning calorimetry). The crosslinking density of samples ranges from 35.0 to 6.01-104 MolM 3. Irrespective of methods, the storage modulus decreases with increasing oil content in the copolymers. The polymers prepared by the first method show minimum swelling in saline water and maximum swelling in tetrahydrofuran. On the other hand, the polymers from the second method show maximum swelling in alkaline solution and a minimum in acidic solution. © BME-PT and GTE.
Citation: Express Polymer Letters (2008), 2(4): 265-276
URI: https://doi.org/10.3144/expresspolymlett.2008.32
http://repository.iitr.ac.in/handle/123456789/2330
Issue Date: 2008
Keywords: Biopolymers
Copolymerization
Linseed oil
Swelling ratio
Transition temperature
ISSN: 1788618X
Author Scopus IDs: 36064297100
6603406384
7005374382
35475516300
Author Affiliations: Sharma, V., Department of Chemical Technology, Sant Longowal Institute of Engineering and Technology, Sangrur, Punjab-148106, India, Department of Chemistry, Punjabi University, Patiala, Punjab-147002, India
Banait, J.S., Department of Chemistry, Punjabi University, Patiala, Punjab-147002, India
Larock, R.C., Department of Chemistry, Iowa State University, Ames, IA 50011, United States
Kundu, P.P., Department of Chemical Technology, Sant Longowal Institute of Engineering and Technology, Sangrur, Punjab-148106, India
Corresponding Author: Kundu, P.P.; Department of Chemical Technology, Sant Longowal Institute of Engineering and Technology, Sangrur, Punjab-148106, India; email: ppk923@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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