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Functionalization of an ethylene-propylene copolymer with allyl (3-isocyanate-4-tolyl) carbamate
Ding, YT; Xin, ZR; Gao, Y; Yin, JH; Costa, G
2003-02-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume41Issue:4Pages:387-402
AbstractAn ethylene-propylene copolymer (EPM) was functionalized with an iso cyanate-bearing unsaturated monomer, allyl(3-isocyanate-4-tolyl) carbamate (TAI), with dicumyl peroxide as an initiator in a xylene solution. Fourier transform infrared (FTIR) was used to confirm the formation of EPM-g-TAI. The peak at 2273 cm(-1), characteristic of -NCO groups in EPM-g-TAI, revealed evidence of grafting. The grafting degree was determined with both chemical titration and FTIR. The grafting degree could be adjusted, and the maximum was over 6 wt % without any gelation. The molar mass distribution of EPM-g-TAI was narrower than that of EPM. The rheological behavior of both EPM-g-TAI and EPM was investigated with a rotational rheometer. The apparent viscosity of EPM-g-TAI was higher than that of EPM and increased with an increasing grafting degree of TAI. Surface analysis by contact-angle measurements showed that contact angles of EPM-g-TAI samples to a given polar liquid decreased with an increasing grafting degree of TAI. We also obtained the dispersion component of the surface free energy (gamma(S)(d)), the polar component of the surface free energy (gamma(S)(d)), and the total surface free energy (gamma(S) = gamma(S)(d) + gamma(S)(p)) of the grafted EPM. These parameters increased with the enhancement of the grafting degree, which gave us a quantitative estimation of the polar contribution of the grafted TAI to the total surface free energy of EPM-g-TAI. The adhesive property of EPM-g-TAI with aluminum foil was studied. The peeling strength between EPM-g-TAI plate and aluminum foil increased dramatically with an increasing content of grafted TAI in EPM-g-TAI. (C) 2003 Wiley Periodicals, Inc.
KeywordIsocyanate Functionalization Of Polymers Radical Grafting Ethylene-propylene Copolymer Polyamides Reactive Extrusion
DOI10.1002/polb.10369
Indexed BySCI
Language英语
WOS IDWOS:000180576300008
PublisherJOHN WILEY & SONS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79664
Collection中国科学院化学研究所
Corresponding AuthorYin, JH
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.CNR, Ist Studio Macromol, I-16149 Genoa, Italy
Recommended Citation
GB/T 7714
Ding, YT,Xin, ZR,Gao, Y,et al. Functionalization of an ethylene-propylene copolymer with allyl (3-isocyanate-4-tolyl) carbamate[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2003,41(4):387-402.
APA Ding, YT,Xin, ZR,Gao, Y,Yin, JH,&Costa, G.(2003).Functionalization of an ethylene-propylene copolymer with allyl (3-isocyanate-4-tolyl) carbamate.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,41(4),387-402.
MLA Ding, YT,et al."Functionalization of an ethylene-propylene copolymer with allyl (3-isocyanate-4-tolyl) carbamate".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 41.4(2003):387-402.
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