Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate)
Polylactide stereocomplex (ST) of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA) (PLLA:PDLA 50:50) was blended with poly(methyl methacrylate) (PMMA) 10 – 50 wt.%. The materials were dissolved in chloroform at room temperature and the films were then cast. Differential scanning calorimetry showed...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2022-12-01
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| Series: | Medžiagotyra |
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| Online Access: | https://matsc.ktu.lt/index.php/MatSc/article/view/30315 |
| _version_ | 1811164898988654592 |
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| author | Onpreeya VEANG-IN Yottha SRITHEP John MORRIS Dutchanee PHOLHARN |
| author_facet | Onpreeya VEANG-IN Yottha SRITHEP John MORRIS Dutchanee PHOLHARN |
| author_sort | Onpreeya VEANG-IN |
| collection | DOAJ |
| description | Polylactide stereocomplex (ST) of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA) (PLLA:PDLA 50:50) was blended with poly(methyl methacrylate) (PMMA) 10 – 50 wt.%. The materials were dissolved in chloroform at room temperature and the films were then cast. Differential scanning calorimetry showed a stereocomplex melting peak at 208 °C – 50 °C higher than that for neat PLLA or PDLA - confirming the polylactide stereocomplex crystallites. The PMMA content ratio of 10 – 50 wt.% in the stereocomplex showed almost complete stereocomplex crystallites. A peak at about 908 cm-1 in Fourier transform infrared spectra further confirmed the stereocomplex crystallites which indicated that PMMA could blend and efficiently bond with the stereocomplex. The X-ray diffraction analysis showed that the stereocomplex crystallinity became smaller when PMMA was added. Morphology from scanning electron microscopy revealed that phases separated in the ST/PMMA blend when the amount of PMMA was increased. Adding PMMA to stereocomplex films led to an increased elongation at break which peaked at 30 % added PMMA. Increased PMMA also led to the improved thermal stability of the stereocomplex. These properties and higher toughness are also needed in common applications, in particular films for packaging and protection of manufactured products. |
| first_indexed | 2024-04-10T15:28:40Z |
| format | Article |
| id | doaj.art-019ae746f53442b1857eb5da70506442 |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-04-10T15:28:40Z |
| publishDate | 2022-12-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-019ae746f53442b1857eb5da705064422023-02-14T04:13:40ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892022-12-0128447448110.5755/j02.ms.3031535569Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate)Onpreeya VEANG-IN0https://orcid.org/0000-0002-6904-2298Yottha SRITHEP1https://orcid.org/0000-0002-7288-8219John MORRIS2https://orcid.org/0000-0003-0539-1189Dutchanee PHOLHARN3https://orcid.org/0000-0002-0584-8372Mahasarakham UniversityMahasarakham UniversityKing Mongkut's Institute of Technology LadkrabangRajabhat Maha Sarakham UniversityPolylactide stereocomplex (ST) of poly(L-lactide) (PLLA) and poly(D-lactide) (PDLA) (PLLA:PDLA 50:50) was blended with poly(methyl methacrylate) (PMMA) 10 – 50 wt.%. The materials were dissolved in chloroform at room temperature and the films were then cast. Differential scanning calorimetry showed a stereocomplex melting peak at 208 °C – 50 °C higher than that for neat PLLA or PDLA - confirming the polylactide stereocomplex crystallites. The PMMA content ratio of 10 – 50 wt.% in the stereocomplex showed almost complete stereocomplex crystallites. A peak at about 908 cm-1 in Fourier transform infrared spectra further confirmed the stereocomplex crystallites which indicated that PMMA could blend and efficiently bond with the stereocomplex. The X-ray diffraction analysis showed that the stereocomplex crystallinity became smaller when PMMA was added. Morphology from scanning electron microscopy revealed that phases separated in the ST/PMMA blend when the amount of PMMA was increased. Adding PMMA to stereocomplex films led to an increased elongation at break which peaked at 30 % added PMMA. Increased PMMA also led to the improved thermal stability of the stereocomplex. These properties and higher toughness are also needed in common applications, in particular films for packaging and protection of manufactured products.https://matsc.ktu.lt/index.php/MatSc/article/view/30315stereocomplex polylactidepoly (methyl methacrylate)thermal and tensile properties |
| spellingShingle | Onpreeya VEANG-IN Yottha SRITHEP John MORRIS Dutchanee PHOLHARN Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) Medžiagotyra stereocomplex polylactide poly (methyl methacrylate) thermal and tensile properties |
| title | Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) |
| title_full | Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) |
| title_fullStr | Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) |
| title_full_unstemmed | Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) |
| title_short | Characterization of Polymer Composites between Stereocomplex Polylactide Blends with Poly (methyl methacrylate) |
| title_sort | characterization of polymer composites between stereocomplex polylactide blends with poly methyl methacrylate |
| topic | stereocomplex polylactide poly (methyl methacrylate) thermal and tensile properties |
| url | https://matsc.ktu.lt/index.php/MatSc/article/view/30315 |
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