Effect of interfacial modification on the thermo-mechanical properties of flax reinforced polylactide stereocomplex composites
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Huihui Zhang
,
Yuzeng Li
Abstract
The flax and equivalent proportion of poly(L-lactic acid)/poly(d-lactic acid) (PLLA/PDLA) were melt compounded and injection molded to prepare flax reinforced polylactide stereocomplex (sc-PLA) bio-composite, and two different coupling agents, hexamethylene diisocyanate (HMDI) and maleic anhydride grafted polypropylene (MAPP), were used to modify the interface of composite, then the influence of different interfacial modification on the structure and properties of composite was investigated. The results showed HMDI modification decreased the total crystallinity of composite but promoted the formation of stereocomplex crystallites (sc), whereas MAPP modification could improve both the total crystallinity and sc crystallinity. HMDI modification significantly improved the interfacial compatibility of composite, and thereby effectively improved the tensile strength and initial storage modulus of composite. By contrast, the interfacial compatibility of flax/sc-PLA composite was weakened by MAPP modification. Although the tensile properties of flax/sc-PLA/MAPP composite decreased, the impact strength of composite was increased by 12.1% than the unmodified composite. Therefore, the tailored flax/sc-PLA composite with varying properties could be prepared by different interfacial modification.
Funding source: Natural Science Foundation of Shanghai
Award Identifier / Grant number: 16ZR1401600
Funding source: Fundamental Research Funds for the Central Universities
Award Identifier / Grant number: 16D110620
Research funding: This work was supported by the Natural Science Foundation of Shanghai (16ZR1401600); and Fundamental Research Funds for the Central Universities (16D110620).
Acknowledgments
We thank Research Center of Analysis and Measurement, Donghua University and Equipment platform of College of Material Science and Engineering, Donghua University for the analysis and characterization of flax/sc-PLA composites.
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Artikel in diesem Heft
- Frontmatter
- Material properties
- Structure-properties relationship for energy storage redox polymers: a review
- Effects of chain polarity of hindered phenol on the damping properties of polymer-based hybrid materials: insights into the molecular mechanism
- Effect of interfacial modification on the thermo-mechanical properties of flax reinforced polylactide stereocomplex composites
- Use of diisocyanate to enhance the flame-retardant, mechanical and crystalline properties of poly (butylene succinate-co-butylene 3-hydroxyphenylphosphinyl-propionate) (PBSH)
- Preparation and assembly
- Graphene oxide modified carbon fiber reinforced epoxy composites
- Fabrication and evaluation of polylactic acid/pectin composite scaffold via freeze extraction for tissue engineering
- Engineering and processing
- Study on the interface morphology in the induction welding joint of PEEK plate at low power
- Ionic gelated β-cyclodextrin-biotin-carboxymethyl chitosan nanoparticles prepared as carrier for oral delivery of protein drugs
Artikel in diesem Heft
- Frontmatter
- Material properties
- Structure-properties relationship for energy storage redox polymers: a review
- Effects of chain polarity of hindered phenol on the damping properties of polymer-based hybrid materials: insights into the molecular mechanism
- Effect of interfacial modification on the thermo-mechanical properties of flax reinforced polylactide stereocomplex composites
- Use of diisocyanate to enhance the flame-retardant, mechanical and crystalline properties of poly (butylene succinate-co-butylene 3-hydroxyphenylphosphinyl-propionate) (PBSH)
- Preparation and assembly
- Graphene oxide modified carbon fiber reinforced epoxy composites
- Fabrication and evaluation of polylactic acid/pectin composite scaffold via freeze extraction for tissue engineering
- Engineering and processing
- Study on the interface morphology in the induction welding joint of PEEK plate at low power
- Ionic gelated β-cyclodextrin-biotin-carboxymethyl chitosan nanoparticles prepared as carrier for oral delivery of protein drugs
