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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.17, no.3, 1999³â, pp.249-255
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Poly(3-hydroxybutyrate) Ç¥¸é ÇüŰ¡ »ýºÐÇØ¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Surface Roughness on Biodegradability of Poly (3-hydroxybutyrate) ) |
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| Poly(3-hydroxybutyrate)ÀÇ Ç¥¸é ÇüŰ¡ »ýºÐÇØ¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´´Ù. ¿ëÀ¶ »óÅÂÀÇ PHB¸¦ ¼³Ã ($-0.5^{circ}C$/min)½ÃÄ×À» ¶§ PHBÀÇ °áÁ¤Èµµ´Â ¾×üÁú¼Ò ¼ÓÀ¸·Î ±Þ³ÃÇÑ ÈÄ $90^{circ}C$¿¡¼ 2½Ã°£ µ¿¾È ¼÷¼ºÇÑ PHBÀÇ °áÁ¤Èµµº¸´Ù ³ô°Ô ³ªÅ¸³µÀ¸³ª ÀüÀÚÀÇ PHB ½Ã·á´Â ¹Ì¼¼ ±Õ¿ÀÇ Á¸Àç·Î ÀÎÇÏ¿© ÈÄÀÚÀÇ PHB ½Ã·áº¸´Ù ´õ ºü¸£°Ô »ýºÐÇØµÇ¾ú´Ù. °ÅÄ£ Ç¥¸éÀ» °¡Áø ÆòÆÇ À§¿¡¼ hot pressÇÏ¿© Ç¥¸éÀ» °ÅÄ¥°Ô ¸¸µç PHB filmÀÇ »ýºÐÇØ´Â Ç¥¸éÀÌ ÆòȰÇÑ filmº¸´Ù ÈξÀ ´õ ºü¸£°Ô ÁøÇàµÇ¾ú´Ù. |
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| The effect of surface roughness on biodegradability of poly (3-hydroxybutyrate) was investigated. The PHB film prepared by cooling the molten polymer slowly ($-0.5^{circ}C$/min) had higher crystallinity and melting temperature than that prepared by quenching into liquid nitrogen followed by annealing at $90^{circ}C$ for 2 hours. However, the former sample was found to degrade faster than the latter due to presence of microscopic crack. Roughening the surface of a PHB film by hot pressing under a coarse surfaced plate accelerated the bioerosion considerably of the sample in comparison with the sample having the same thermal history but smooth surface. |
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| Poly (3-hydroxybutyrate);biodegradability;surface roughness;the modified Sturm test; |
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ȯ°æ»ý¹° / v.17, no.3, 1999³â, pp.249-255
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921494762)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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