02225nas a2200241   4500008004100000022001400041245013900055210006900194260006900263300001200332490000700344520129300351653003701644653001501681653003901696653001601735653002601751653003701777100001401814700001401828700001601842856012501858       2005                        eng d  a0254-058400aDegradability of composites, prepared from ethylene-propylene copolymer and jute fiber under accelerated aging and biotic environments0 aDegradability of composites prepared from ethylenepropylene copo  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAUG  a458-4690 v923 a<p>The utilization of natural fiber as reinforcement for the thermoplastic composites is growing not only for ecological concern but also for wide range of applications. In the present article, three types of composites were prepared by melt mixing of ethyl ene-propylene (EP) copolymer and (i) 3% NaOH treated jute fiber, (ii) 17.5% NaOH treated jute fiber and (iii) commercial microcrystalline cellulose powder using maleated EP copolymer as compatibilizer. The obtained composites were characterized by Fourier transform infrared spectroscopy (FTIR), Thermal gravimetric analysis (TGA) and microscopic measurements. The durability of the composites was evaluated under polychromatic irradiation (λ &amp;GE; 290 nm) and composting condition for different time intervals. It was found that the treatments on the natural fiber have influenced the service life of the end product. Composites made from microcrystalline cellulose showed better mechanical properties as well as photo-resistance. The specimen containing 3% NaOH treated fiber exhibited relatively lowest photo-resistance and biosusceptibility. It was found that the composites were less durable under both abiotic and biotic conditions in comparison of the neat polymer matrix. © 2005 Elsevier B.V. All rights reserved.</p>10aaccelerated aging and composting10acomposites10aethylene-propylene (EP) copolymers10ajute fibers10amechanical properties10amicrocystalline cellulose powder1 aKumar, AP1 aSingh, RP1 aSarwade, BD  uhttps://library.ncl.res.in/content/degradability-composites-prepared-ethylene-propylene-copolymer-and-jute-fiber-under-001800nas a2200229   4500008004100000022001400041245007500055210006900130260008600199300001400285490000800299520101500307653001901322653002401341653002101365653002001386653001401406653001201420100001601432700001601448856010601464       2005                        eng d  a1060-132500aSynthesis and biodegradability of polyaspartic acid: a critical review0 aSynthesis and biodegradability of polyaspartic acid a critical r  a325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcSEP  a1299-13150 vA423 a<p>Poly(aspartic acid) (PAA) being biodegradable is suitable for various industrial medical and agricultural applications to replace many non-biodegradable polymers in use. Poly(aspartic acid) can be synthesized by different methods with and without catalyst in different forms such as polysuccinimide, either hydrolyzed to acid or salt. The polymer of (aspartic acid) is present in different forms such as alpha, beta and L, D isomers. The conformational analysis of poly(aspartic acid) was done by various analytical methods. Different combinations of these two isomer present in different percentage can be detected by various methods such as Hoffman degradation, IR, and NMR spectroscopic analysis. From the standard test for biodegrad ability, it was shown that the polymer is fully biodegradable. In this review, synthesis and characterization of homo and copolymer derivatives of PAA, along with the application and biodegradability in comparison with the other polymer in use, is discussed briefly.</p>10aBiodegradation10apoly(aspartic acid)10aPolycondensation10apolysuccinimide10asynthesis10athermal1 aThombre, SM1 aSarwade, BD  uhttps://library.ncl.res.in/content/synthesis-and-biodegradability-polyaspartic-acid-critical-review-0