Chemical Recycling Technology of Polylactic Acid/talc-Application into Agricultural Materials

Poly(L-lactic acid) (PLLA) has been considered to be applied into parts of agricultural machineries, for example gear grips, in order to increase the biomass content of materials. Since PLLA is a well known recyclable polymer, the chemical conversion of the PLLA parts into L,L-lactide is envisioned....

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Published inKōbunshi ronbunshū (Tokyo) Vol. 72; no. 6; pp. 361 - 368
Main Authors Tsukegi, Takayuki, Nagasawa, Norio, Horii, Takayoshi, Nishida, Haruo
Format Journal Article
LanguageEnglish
Published 19.05.2015
Subjects
Agricultural equipment
Conversion
Gears
Injection molding machines
Recovering
Recycling
Tensile strength
Thermal degradation
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Summary:Poly(L-lactic acid) (PLLA) has been considered to be applied into parts of agricultural machineries, for example gear grips, in order to increase the biomass content of materials. Since PLLA is a well known recyclable polymer, the chemical conversion of the PLLA parts into L,L-lactide is envisioned. In this study, the thermal degradation of the gear grips was investigated to recover the L,L-lactide, resulting in selective recovery with complete conversion. Moreover, repolymerization of the obtained L,L-lactide was carried out by using with a twin screw extruder. After producing the raising seedling pot by an injection molding machine, the tensile strength values of the repolymerized and virgin samples were the same (54.4 MPa).
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.2015-0008