01764nas a2200157   4500008004100000022001400041245014000055210006900195260011000264300001200374490000700386520104600393100001801439700002301457856012601480       2012                        eng d  a1463-926200aTowards biodegradable elastomers: green synthesis of carbohydrate functionalized styrene-butadiene-styrene copolymer by click chemistry0 aTowards biodegradable elastomers green synthesis of carbohydrate  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC  a348-3560 v143 a<p>Random attachment of sugar molecules to synthetic polymers is an important strategy to induce biodegradability in these polymers. The present study successfully employs ``click'' chemistry to introduce low levels of sugar molecules onto styrene-butadiene-styrene (SBS) copolymer, a widely used commodity polymer which is not biodegradable. Spectral, morphological and thermal studies of the modified polymers were carried out to show the dramatic changes in the properties of these modified polymers. Thermal stability of glucose linked SBS had onset of degradation at 428 degrees C, down from 478 degrees C observed for SBS. Morphology studied by WAXRD and SEM showed destructuring of the polymer domains of SBS, which is beneficial for biodegradation of these polymers. Previous studies showed that sugars anchored by hydrolysable ester groups onto polystyrene were biodegradable; current studies show that sugars anchored by unhydrolyzable C-C bonds on the butadiene component of SBS copolymer are also significantly biodegradable.</p>1 aSingh, Rakesh1 aVarma, Anjanikumar  uhttps://library.ncl.res.in/content/towards-biodegradable-elastomers-green-synthesis-carbohydrate-functionalized-styrene-0