Effects of water temperature on degradation of several biodegradable polymers immersed in water

N. Hirai; T. Tanaka; Y. Ohki; Y. Tajitsu; M. Kohtoh; S. Okabe

Effects of water temperature on degradation of several biodegradable polymers immersed in water

N. Hirai, T. Tanaka, Y. Ohki, Y. Tajitsu, M. Kohtoh, S. Okabe

研究成果: Paper

抄録

Four kinds of biodegradable polymers were immersed in water around 301 K and 351 K for fixed periods from 1 to 720 hours, and their degradation was studied by observing their shapes, weights, molecular weights, and space charge distributions. Samples tested were poly-L-lactic acid (PLLA), polycaprolactone butylene succinate (PCL-BS), polyethylene terephthalate succinate (PETS), and polybutylene succinate (PBS). From space charge observation, it is assumed that water accelerates ionization of substances and extraction of ionizable species. The durability against water becomes much worse when the water is 351 K compared to 301 K for all the samples. For example, PLLA crumbles easily at 351 K, while it shows good durability at 301 K.

本文言語	English
ページ	771-774
ページ数	4
出版ステータス	Published - 2005 10 7
イベント	2005 International Symposium on Electrical Insulating Materials, ISEIM 2005 - Kitakyushu, Japan 継続期間: 2005 6 5 → 2005 6 9

Conference

Conference	2005 International Symposium on Electrical Insulating Materials, ISEIM 2005
Country	Japan
City	Kitakyushu
Period	05/6/5 → 05/6/9

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)

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引用スタイル

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abstract = "Four kinds of biodegradable polymers were immersed in water around 301 K and 351 K for fixed periods from 1 to 720 hours, and their degradation was studied by observing their shapes, weights, molecular weights, and space charge distributions. Samples tested were poly-L-lactic acid (PLLA), polycaprolactone butylene succinate (PCL-BS), polyethylene terephthalate succinate (PETS), and polybutylene succinate (PBS). From space charge observation, it is assumed that water accelerates ionization of substances and extraction of ionizable species. The durability against water becomes much worse when the water is 351 K compared to 301 K for all the samples. For example, PLLA crumbles easily at 351 K, while it shows good durability at 301 K.",

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T1 - Effects of water temperature on degradation of several biodegradable polymers immersed in water

AU - Hirai, N.

AU - Tanaka, T.

AU - Ohki, Y.

AU - Tajitsu, Y.

AU - Kohtoh, M.

AU - Okabe, S.

PY - 2005/10/7

Y1 - 2005/10/7

N2 - Four kinds of biodegradable polymers were immersed in water around 301 K and 351 K for fixed periods from 1 to 720 hours, and their degradation was studied by observing their shapes, weights, molecular weights, and space charge distributions. Samples tested were poly-L-lactic acid (PLLA), polycaprolactone butylene succinate (PCL-BS), polyethylene terephthalate succinate (PETS), and polybutylene succinate (PBS). From space charge observation, it is assumed that water accelerates ionization of substances and extraction of ionizable species. The durability against water becomes much worse when the water is 351 K compared to 301 K for all the samples. For example, PLLA crumbles easily at 351 K, while it shows good durability at 301 K.

AB - Four kinds of biodegradable polymers were immersed in water around 301 K and 351 K for fixed periods from 1 to 720 hours, and their degradation was studied by observing their shapes, weights, molecular weights, and space charge distributions. Samples tested were poly-L-lactic acid (PLLA), polycaprolactone butylene succinate (PCL-BS), polyethylene terephthalate succinate (PETS), and polybutylene succinate (PBS). From space charge observation, it is assumed that water accelerates ionization of substances and extraction of ionizable species. The durability against water becomes much worse when the water is 351 K compared to 301 K for all the samples. For example, PLLA crumbles easily at 351 K, while it shows good durability at 301 K.

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