@article{oai:kindai.repo.nii.ac.jp:00013106, author = {中島, 照夫}, issue = {7}, journal = {近畿大学資源再生研究所報告, Annual report of the institute of resource recycling of Kinki University}, month = {Mar}, note = {[Synopsis] Chitin, chitosan and quaternary chitosan films were prepared, and the physical properties and the antibacterial activities of chitosan and quaternary chitosan films were evaluated. The tensile strength of chitin films was 30~40% lower than that of chitosan films, but the crystallinity of chitin film was much higher than that of chitosan films. The crystallinity and orientation of crystallites were hardly affected by the four kinds of solvent chosen to cast chitosan films, but a detailed analysis revealed that the cast film prepared with acetic acid provided slightly lower crystallinity than others. The antibacterial activities of quaternary chitosan films against Staphylococcus aureus NBRC 12732 and Escherichia coli NBRC 3972 were stronger than those of chitosan films. The antibacterial activities of neutralized chitosan films may be slightly inferior to those of unneutralized chitosan films. The improvement in the antibacterial activity of chitosan films against E. coli was slightly inferior to that against S. aureus. This phenomenon was particularly observed on the neutralized chitosan films. Though the antibacterial activity of chitosan was slightly inferior to that of the organic antibacterial compounds, we emphasize that chitosan would be a useful and suitable material with regard to its effect on the environmental ecosystem., application/pdf}, pages = {1--15}, title = {生分解性材料としてのキトサンフィルムの物性と抗菌活性}, year = {2009}, yomi = {ナカシマ, テルオ} }