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Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber

Photo-crosslinkable elastomers were synthesized by addition of photo-sensitive alcohols to the alkylsuccinic ring of liquid natural rubber (LNR) and synthetic liquid, 1,4-polyisoprene (LIR) was modified for the first time by reaction with maleic anhydride. Two reagents were used: 2-hydroxyethyl cinn...

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Main Authors:	Derouet, D., Phinyocheep, P., Boccaccio, G., Brosse, J.C.
Format:	Journal Contribution
Language:	English
Published:	2013
Subjects:	HEVEA BRASILIENSIS CAOUTCHOUC ELASTOMERE ALCOOL/ PHOTOSENSIBILITE POLYMERE CAUCHO ELASTOMEROS ALCOHOLES/ FOTOSENSIBILIDAD POLIMEROS
Online Access:	http://agris.upm.edu.my:8080/dspace/handle/0/4002
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spelling	oai:http:--agris.upm.edu.my:0-4002Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubberDerouet, D.Phinyocheep, P.Boccaccio, G.Brosse, J.C.HEVEA BRASILIENSISCAOUTCHOUCELASTOMEREALCOOL/ PHOTOSENSIBILITEPOLYMEREHEVEA BRASILIENSISCAUCHOELASTOMEROSALCOHOLES/ FOTOSENSIBILIDADPOLIMEROSPhoto-crosslinkable elastomers were synthesized by addition of photo-sensitive alcohols to the alkylsuccinic ring of liquid natural rubber (LNR) and synthetic liquid, 1,4-polyisoprene (LIR) was modified for the first time by reaction with maleic anhydride. Two reagents were used: 2-hydroxyethyl cinnamate (HEC) and 2-hydroxyethyl acrylate (HEA). The fixation proceeded by succinic ring opening by the action of the alcohol function of the photo-reactive molecule and led to a hemi-ester adduct. At moderate temperature (about 70 degrees C), the reaction on succinic anhydride functions of maleinisated LIR was fast and quantitative when it was catalysed by pyridine and led to polymers which were completely soluble in organic solvents. On the other hand, under the same conditions, yields of HEC addition on succinic rings of maleinisated LNR were less significant (- 60 percent) than on maleinisated LIR, and in the case of the acrylate reagent, the reaction was affected by the formation of gel structures. The relationship between the polymer structure and its photo-sensitivity is presented. The effects of photo-reactive group contents on the photo-crosslinking kinetics were investigated for each category of prepared polymers. Flexible films with good adherence on metal were prepared by using formulations including LIR or LNR carrying cinnamate groups.2013-08-23T07:17:14Z2013-08-23T07:17:14Z1991Journal ContributionArticleNon-RefereedJournal of Natural Rubber Research (Malaysia), 6 (1), p. 39-540127-7065http://agris.upm.edu.my:8080/dspace/handle/0/4002MY9105256en
institution	AGRIS
collection	AGRIS
language	English
topic	HEVEA BRASILIENSIS CAOUTCHOUC ELASTOMERE ALCOOL/ PHOTOSENSIBILITE POLYMERE HEVEA BRASILIENSIS CAUCHO ELASTOMEROS ALCOHOLES/ FOTOSENSIBILIDAD POLIMEROS
spellingShingle	HEVEA BRASILIENSIS CAOUTCHOUC ELASTOMERE ALCOOL/ PHOTOSENSIBILITE POLYMERE HEVEA BRASILIENSIS CAUCHO ELASTOMEROS ALCOHOLES/ FOTOSENSIBILIDAD POLIMEROS Derouet, D. Phinyocheep, P. Boccaccio, G. Brosse, J.C. Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
description	Photo-crosslinkable elastomers were synthesized by addition of photo-sensitive alcohols to the alkylsuccinic ring of liquid natural rubber (LNR) and synthetic liquid, 1,4-polyisoprene (LIR) was modified for the first time by reaction with maleic anhydride. Two reagents were used: 2-hydroxyethyl cinnamate (HEC) and 2-hydroxyethyl acrylate (HEA). The fixation proceeded by succinic ring opening by the action of the alcohol function of the photo-reactive molecule and led to a hemi-ester adduct. At moderate temperature (about 70 degrees C), the reaction on succinic anhydride functions of maleinisated LIR was fast and quantitative when it was catalysed by pyridine and led to polymers which were completely soluble in organic solvents. On the other hand, under the same conditions, yields of HEC addition on succinic rings of maleinisated LNR were less significant (- 60 percent) than on maleinisated LIR, and in the case of the acrylate reagent, the reaction was affected by the formation of gel structures. The relationship between the polymer structure and its photo-sensitivity is presented. The effects of photo-reactive group contents on the photo-crosslinking kinetics were investigated for each category of prepared polymers. Flexible films with good adherence on metal were prepared by using formulations including LIR or LNR carrying cinnamate groups.
format	Journal Contribution
author	Derouet, D. Phinyocheep, P. Boccaccio, G. Brosse, J.C.
author_facet	Derouet, D. Phinyocheep, P. Boccaccio, G. Brosse, J.C.
author_sort	Derouet, D.
title	Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
title_short	Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
title_full	Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
title_fullStr	Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
title_full_unstemmed	Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
title_sort	synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber
publishDate	2013
url	http://agris.upm.edu.my:8080/dspace/handle/0/4002
_version_	1782769975247765504
score	12.935284

Synthesis of photo-crosslinkable elastomers by chemical modification of liquid natural rubber

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