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The following abstracts relate to Biodegradable Plastics-themed records recently added to the Polymer Library.
By clicking on the 7 digit accession number or title, a Copyright Cleared copy of the full-text article can be ordered.
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1033175 |
BIODEGRADABLE POLYMERS DELIVER CRITICAL DRUGS |
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This article reports on research being carried out in the USA into the use of biodegradable polymers which degrade in the body and could send drugs to specific areas, in order to treat inflammatory illnesses such as bowel disease. Details of the research project are provided.
Medical Device and Diagnostic Industry, 30, No.10, Oct.2008, p.32/33, ISSN: 0194-844X
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1032826 |
SYNTHESIS OF AMPHIPHILIC ABC 3-MIKTOARM STAR TERPOLYMER BY COMBINATION OF RING-OPENING POLYMERIZATION AND CLICK CHEMISTRY |
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Details are given of the preparation of biodegradable amphiphilic ABC 3-miktoarm star terpolymers composed of polycaprolactone, methoxypolyethylene glycol, and polyphosphoester by a combination of ring opening polymerisation and click chemistry. The terpolymers were characterised by proton NMR, FTIR and GPC. Potential applications as drug delivery systems are mentioned. 41 refs.
Macromolecules, 41, No.22, 25th Nov.2008, p.8620-8625, ISSN: 0024-9297, DOI: 10.1021/ma801452n
Yuan Y-Y; Wang Y-C; Du J-Z; Wang J
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1032673 |
BIODEGRADATION OF LOW-DENSITY POLYETHYLENE-BANANA STARCH FILMS |
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Blended films were prepared from low density polyethylene (LDPE), banana starch (either acetylated or oxidised) and glycerol by extrusion blending. Films were characterised using differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, and tensile property measurements. Biodegradation of the different films under soil burial conditions was investigated, and weight loss measurements were recorded in addition to changes in thermal, morphological and mechanical properties. Faster degradation was observed when acetylated banana starch was used. Starch degradation proved the major mechanism of film degradation under these conditions. It was noted that degradation temperature increased with increased soil burial time. 39 refs.
Journal of Applied Polymer Science, 110, No.6, 15th Dec.2008 p.3464-3472, ISSN: 0021-8995, DOI: 10.1002/app.28938
Torres A V; Zamudio-Flores P B; Salgado-Delgado R; Bello-Perez L A
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1032562 |
A THERMOGRAVIMETRIC APPROACH TO STUDY THE INFLUENCE OF A BIODEGRADATION IN SOIL TEST TO A POLY(LACTIC ACID) |
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The effects of biodegradation in soil testing on the thermal stability and thermal decomposition kinetics of amorphous poly(lactic acid) were investigated by TGA as a function of time, and the degradation is described in terms of a single-stage decomposition process which can be modelled by a kinetic function. The apparent activation energies of the degradation mechanism were calculated using the kinetic methods proposed by Broido and Chang, and the results are discussed in comparison with those obtained using the method developed by Coats and Redfern. 18 refs.
Macromolecular Symposia, No.272, 2008, p.93-99, ISSN: 1022-1360, DOI: 10.1002/masy.200851213
Badia J D; Moriana R; Santonja-Blasco L; Ribes-Greus A
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