Photodegradation of composites based on polylactide and polybutylene adipate terephtalate

Degradation of polylactide (PLA)— polybutylene adipate terephthalate (PBAT) mixtures under the action of UV radiation (λ= 254 and 365 nm) was investigated. It is established that polybutylene adipate terephthalate slows down the PLA degradation without changing its mechanism. After photodegradation,...

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Veröffentlicht in:	Russian chemical bulletin 2023-06, Vol.72 (6), p.1414-1421
Hauptverfasser:	Podzorova, M. V., Selezneva, L. D., Tertyshnaya, Yu. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Chemistry and Materials Science Chemistry/Food Science Full Articles Glass transition temperature Inorganic Chemistry Mechanical properties Melting points Mixtures Organic Chemistry Photodegradation Polybutylenes Polylactic acid Terephthalate Ultraviolet radiation Wavelengths
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description	Degradation of polylactide (PLA)— polybutylene adipate terephthalate (PBAT) mixtures under the action of UV radiation (λ= 254 and 365 nm) was investigated. It is established that polybutylene adipate terephthalate slows down the PLA degradation without changing its mechanism. After photodegradation, the PLA glass transition temperature shifts to higher values, while its melting point decreases by 3.6–5.0 °C (λ = 254 nm). The crystallinity degree of PLA is reduced by no more than 5% after exposure to UV radiation at both wavelengths. After UV radiation at both wavelengths, intensities of characteristic IR bands of both components change substantially. The mechanical properties of mixtures of all studied compositions deteriorate after irradiation with light with λ = 254 nm for 50 h, and more significant deterioration is observed for samples with a predominance of PLA.
doi_str_mv	10.1007/s11172-023-3916-9
format	Article
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V.</creatorcontrib><creatorcontrib>Selezneva, L. D.</creatorcontrib><creatorcontrib>Tertyshnaya, Yu. V.</creatorcontrib><title>Photodegradation of composites based on polylactide and polybutylene adipate terephtalate</title><title>Russian chemical bulletin</title><addtitle>Russ Chem Bull</addtitle><description>Degradation of polylactide (PLA)— polybutylene adipate terephthalate (PBAT) mixtures under the action of UV radiation (λ= 254 and 365 nm) was investigated. It is established that polybutylene adipate terephthalate slows down the PLA degradation without changing its mechanism. After photodegradation, the PLA glass transition temperature shifts to higher values, while its melting point decreases by 3.6–5.0 °C (λ = 254 nm). The crystallinity degree of PLA is reduced by no more than 5% after exposure to UV radiation at both wavelengths. After UV radiation at both wavelengths, intensities of characteristic IR bands of both components change substantially. The mechanical properties of mixtures of all studied compositions deteriorate after irradiation with light with λ = 254 nm for 50 h, and more significant deterioration is observed for samples with a predominance of PLA.</description><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Chemistry/Food Science</subject><subject>Full Articles</subject><subject>Glass transition temperature</subject><subject>Inorganic Chemistry</subject><subject>Mechanical properties</subject><subject>Melting points</subject><subject>Mixtures</subject><subject>Organic Chemistry</subject><subject>Photodegradation</subject><subject>Polybutylenes</subject><subject>Polylactic acid</subject><subject>Terephthalate</subject><subject>Ultraviolet radiation</subject><subject>Wavelengths</subject><issn>1066-5285</issn><issn>1573-9171</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp1kLtOAzEQRS0EEiHwAXQrURv8wI8tUcRLigQFFFSWY4-TjTbrxXaK_D2GRaKimpmre2dGB6FLSq4pIeomU0oVw4RxzFsqcXuEZlQojluq6HHtiZRYMC1O0VnOW0II01rP0MfrJpboYZ2st6WLQxND4-JujLkrkJuVzeCbKo-xP_TWlc5DYwf_M6_25dDDUAXfjbZAUyDBuCm2r8M5Ogm2z3DxW-fo_eH-bfGEly-Pz4u7JXacyoKlC05z4VounXb1Y-E041T4YKUAqKKkQXGQijMNUrdWeFE9gROrhHR8jq6mvWOKn3vIxWzjPg31pGGatURXArfVRSeXSzHnBMGMqdvZdDCUmG-CZiJoKkHzTdC0NcOmTK7eYQ3pb_P_oS_tjnS3</recordid><startdate>20230601</startdate><enddate>20230601</enddate><creator>Podzorova, M. 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It is established that polybutylene adipate terephthalate slows down the PLA degradation without changing its mechanism. After photodegradation, the PLA glass transition temperature shifts to higher values, while its melting point decreases by 3.6–5.0 °C (λ = 254 nm). The crystallinity degree of PLA is reduced by no more than 5% after exposure to UV radiation at both wavelengths. After UV radiation at both wavelengths, intensities of characteristic IR bands of both components change substantially. The mechanical properties of mixtures of all studied compositions deteriorate after irradiation with light with λ = 254 nm for 50 h, and more significant deterioration is observed for samples with a predominance of PLA.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11172-023-3916-9</doi><tpages>8</tpages></addata></record>
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subjects	Chemistry Chemistry and Materials Science Chemistry/Food Science Full Articles Glass transition temperature Inorganic Chemistry Mechanical properties Melting points Mixtures Organic Chemistry Photodegradation Polybutylenes Polylactic acid Terephthalate Ultraviolet radiation Wavelengths
title	Photodegradation of composites based on polylactide and polybutylene adipate terephtalate
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