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- Torres, ElenaAITEX Textile Industry Research Association, Spain (author)
Improved Mechanical, Thermal, and Hydrophobic Properties of PLA Modified with Alkoxysilanes by Reactive Extrusion Process
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- 2021-07-27
- MDPI,2021
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:ri-55655
- https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-55655URI
- https://doi.org/10.3390/polym13152475DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- An eco-friendly strategy for the modification of polylactic acid (PLA) surface properties, using a solvent-free process, is reported. Reactive extrusion (REX) allowed the formation of new covalent bonds between functional molecules and the PLA polymeric matrix, enhancing its mechanical properties and modifying surface hydrophobicity. To this end, the PLA backbone was modified using two alkoxysilanes, phenyltriethoxysilane and N-octyltriethoxysilane. The reactive extrusion process was carried out under mild conditions, using melting temperatures between 150 and 180 °C, 300 rpm as screw speed, and a feeding rate of 3 kg·h−1. To complete the study, flat tapes of neat and functionalized PLA were obtained through monofilament melt extrusion to quantify the enhancement of mechanical properties and hydrophobicity. The results verified that PLA modified with 3 wt% of N-octyltriethoxysilane improves mechanical and thermal properties, reaching Young’s modulus values of 4.8 GPa, and PLA hydrophobic behavior, with values of water contact angle shifting from 68.6° to 82.2°.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Industriell bioteknik Biomaterial hsv//swe
- ENGINEERING AND TECHNOLOGY Industrial Biotechnology Bio Materials hsv//eng
- PLA
- biopolymers
- alkoxysilanes
- hydrophobicity
- grafting
- monofilament melt extrusion
- thermal properties
- reactive extrusion
Added entries (persons, corporate bodies, meetings, titles ...)
- Gaona, AideAITEX Textile Industry Research Association, Spain (author)
- García-Bosch, NadiaAITEX Textile Industry Research Association, Spain (author)
- Muñoz, MiguelAITEX Textile Industry Research Association, Spain (author)
- Fombuena, VicentUniversitat Politècnica de València, Spain (author)
- Moriana Torro, RosanaRISE,Material- och ytdesign(Swepub:ri)rosana.moriana.torro@ri.se (author)
- Vallés-Lluch, AnaUniversitat Politècnica de València, Spain (author)
- AITEX Textile Industry Research Association, SpainUniversitat Politècnica de València, Spain (creator_code:org_t)
Related titles
- In:Polymers: MDPI13:152073-4360
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