Enhanced crystallization of poly(d-lactide) by xylan esters |
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| Institution: | 1. Science of Polymeric Materials, Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan;2. College of Science and Mathematics, University of the Philippines Mindanao, Mintal, Tugbok District, Davao City 8022, Philippines;1. US Army Armaments Research Development and Engineering Center – Benét Laboratories, Watervliet, NY 12189, USA;2. Norwich University, Department of Mechanical Engineering, Northfield, VT 05663, USA;3. University of Southern Mississippi, School of Polymers and High Performance Materials, Hattiesburg, MS 39406, USA;1. Department of Food and Environmental Sciences, University of Helsinki, P.O. Box 27, 00014 Helsinki, Finland;2. VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT, Finland;3. Department of Physics, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland;1. Institute for Environmental Sciences, University of Shizuoka, 52 Yada, Suruga-ku, Shizuoka 422-8526, Japan;2. Faculty of Agriculture, Meijo University, 1-501, Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan;3. Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 133-8657, Japan |
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| Abstract: | The crystallization behavior of poly(d-lactide) loaded with xylan propionate (XylPr) and xylan butyrate (XylBu) was investigated. Non-isothermal crystallization study revealed that the crystallization temperature (Tc) of PDLA decreased by almost 30 °C when loaded with 1% XylPr or XylBu. PDLA blends containing 0.1% xylan ester produced similar results. Isothermal crystallization study suggests faster rate of crystallization of the PDLA blends as indicated by their t1/2 values. The Xc values of the PDLA blends were also higher as compared to neat PDLA. However, the PDLA blends still possessed lower degrees of haze due to the presence of smaller spherulites. Based on TMA, PDLA blends exhibited better thermal stability than neat PDLA. |
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| Keywords: | Xylan esters Nucleating agent Crystallization |
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