Alcoholysis of Poly(L-lactic acid) under microwave irradiation

被引：50

作者：

Hirao, Koichi ^{[1
]}

Nakatsuchi, Yuta ^{[1
]}

Ohara, Hitomi ^{[1
]}

机构：

[1] Kyoto Inst Technol, R&D Ctr Biobased Mat, Sakyo Ku, Kyoto 6068585, Japan

来源：

POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 06期

关键词：

Activation energy; Alcoholysis; Microwave; Poly(lactic acid); Recycling; POLY(LACTIC ACID); L; L-LACTIDE; DEGRADATION;

D O I：

10.1016/j.polymdegradstab.2010.03.027

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Chemical recycling of poly(L-lactic acid) (PLLA) by alcoholysis under microwave irradiation was investigated. Reaction rates in ethanol (140-180 degrees C) and butanol (130-210 degrees C) were greater under microwave irradiation than under conventional heating. However, because activation energies were almost the same under both conditions, the reaction mechanisms would be the same, but the reaction rates differed due to the reaction frequency factor. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：925 / 928

页数：4

共 12 条

[1] Thermal degradation of poly(L-lactide): effect of alkali earth metal oxides for selective L,L-lactide formation [J].

Fan, YJ ;

Nishida, H ;

Mori, T ;

Shirai, Y ;

Endo, T .

POLYMER, 2004, 45 (04) :1197-1205

[2] LACTIC ESTERS BY REACTION OF AMMONIUM LACTATE WITH ALCOHOLS [J].

FILACHIONE, EM ;

COSTELLO, EJ .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1952, 44 (09) :2189-2191

[3] Dielectric parameters relevant to microwave dielectric heating [J].

Gabriel, C ;

Gabriel, S ;

Grant, EH ;

Halstead, BSJ ;

Mingos, DMP .

CHEMICAL SOCIETY REVIEWS, 1998, 27 (03) :213-223

[4] Hydrolysis of poly(L-lactic acid) using microwave irradiation [J].

Hirao, Koichi ;

Shimamoto, Yoshie ;

Nakatsuchi, Yuta ;

Ohara, Hitomi .

POLYMER DEGRADATION AND STABILITY, 2010, 95 (01) :86-88

[5] Synthesis of L,L-Lactide via Depolymerization of Oligo(L-Lactic Acid) by Microwave Irradiation [J].

Hirao, Koichi ;

Masutani, Kazunari ;

Ohara, Hitomi .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2009, 42 (09) :687-690

[6] Noncatalytic Polycondensation of L-Lactic Acid under Microwave Irradiation [J].

Hirao, Koichi ;

Masutani, Kazunari ;

Ohara, Hitomi .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2009, 42 (06) :417-419

[7] Production of poly(L-lactide)-degrading enzyme by Amycolatopsis orientalis for biological recycling of poly(L-lactide) [J].

Jarerat, Amnat ;

Tokiwa, Yutaka ;

Tanaka, Hideo .

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 2006, 72 (04) :726-731

[8] Degradation of poly(lactic acid) into repolymerizable oligomer using montmorillonite K10 for chemical recycling [J].

Okamoto, K ;

Toshima, K ;

Matsumura, S .

MACROMOLECULAR BIOSCIENCE, 2005, 5 (09) :813-820

[9]

Sibata C, 1986, IND MICROWAVE POWER

[10] Lipase-catalyzed transformation of poly(lactic acid) into cyclic oligomers [J].

Takahashi, Y ;

Okajima, S ;

Toshima, K ;

Matsumura, S .

MACROMOLECULAR BIOSCIENCE, 2004, 4 (03) :346-353

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