Structure mediation and ductility enhancement of poly(l-lactide) by random copolymer poly(d-lactide-co-ε-caprolactone)
-
Xiuqin Zhang
,
Yongai Yin
Abstract
Two types of random copolymer poly(d-lactide-co-ε-caprolactone) (PDLA-r-PCL) were added into poly(l-lactide) (PLLA) matrix by melt blending. The structure and property of PLLA/PDLA-r-PCL blends were investigated by thermal gravimetric analysis, differential scanning calorimetry, scanning electron microscopy, wide-angle X-ray diffraction, and mechanical measurement. The results suggested that PDLA-r-PCL had little effect on the thermal property of PLLA. PDLA-r-PCL uniformly dispersed in PLLA matrix, which contributed to the improvement of stretching properties. During stretching at 25°C, with the increased content of PDLA-r-PCL, the elongation at break of PLLA increased and the strength decreased. The degree of decrease in fracture strength was related to the molecular structure of PDLA-r-PCL. When a small amount of stereocomplex crystals (SC) were formed in PLLA/PDLA-r-PCL blends, the strength was maintained or slightly enhanced even though the elongation at break of the blends was significantly improved by soft chains of PCL. It might be caused by the synergistic effects of SC crystals and plasticization of PCL chains.
Acknowledgments
The work was financially supported by the National Key Research and Development Program of China (2017YFB0309300) and the National Natural Science Foundation of China (grant nos. 51673003, 51628301).
References
[1] Saeidlou S, Huneault MA, Li H, Park CB. Prog. Polym. Sci. 2012, 37, 1657–1677.10.1016/j.progpolymsci.2012.07.005Search in Google Scholar
[2] Rasal RM, Janorkar AV, Hirt DE. Prog. Polym. Sci. 2010, 35, 338–356.10.1016/j.progpolymsci.2009.12.003Search in Google Scholar
[3] Gupta B, Revagade N, Hilborn J. Prog. Polym. Sci. 2007, 32, 455–482.10.1016/j.progpolymsci.2007.01.005Search in Google Scholar
[4] Tsuji H. Adv. Drug. Deliv. Rev. 2016, 107, 97–135.10.1016/j.addr.2016.04.017Search in Google Scholar PubMed
[5] Lim LT, Auras R, Rubino M. Prog. Polym. Sci. 2008, 33, 820–852.10.1016/j.progpolymsci.2008.05.004Search in Google Scholar
[6] Gustafsson G, Nishida M, Ito Y, Haggblad HA, Jonsen P, Takayama T, Todo M. J. Mech. Behav. Biomed. 2015, 51, 279–290.10.1016/j.jmbbm.2015.07.007Search in Google Scholar PubMed
[7] Helminen AO, Korhonen H, Seppälä JV. Macromol. Chem. Phys. 2002, 203, 2630–2639.10.1002/macp.200290039Search in Google Scholar
[8] Frick EM, Zalusky AS, Hillmyer MA. Biomacromolecules 2003, 4, 216–223.10.1021/bm025628bSearch in Google Scholar PubMed
[9] Grijpma DW, Altpeter H, Bevis MJ, Feijen J. Polym. Int. 2002, 51, 845–851.10.1002/pi.988Search in Google Scholar
[10] Ghosh S, Viana JC, Reis RL, Mano JF. Mater. Sci. Eng. A 2008, 490, 81–89.10.1016/j.msea.2008.01.003Search in Google Scholar
[11] Jiang L, Wolcott MP, Zhang J. Biomacromolecules 2006, 7, 199–207.10.1021/bm050581qSearch in Google Scholar
[12] Shibata M, Inoue Y, Miyoshi M. Polymer 2006, 47, 3557–3564.10.1016/j.polymer.2006.03.065Search in Google Scholar
[13] Oliaei E, Kaffashi B, Davoodi S. J. Appl. Polym. Sci. 2016, 133, 43104–43116.10.1002/app.43104Search in Google Scholar
[14] Bai HW, Huang CM, Xiu H, Gao Y, Zhang Q, Fu Q. Polymer 2013, 54, 5257–5266.10.1016/j.polymer.2013.07.051Search in Google Scholar
[15] Tsuji H, Ikada Y. J. Appl. Polym. Sci. 1998, 67, 405–415.10.1002/(SICI)1097-4628(19980118)67:3<405::AID-APP3>3.0.CO;2-QSearch in Google Scholar
[16] Arras MML, Jana R, Muhlstadt M, Maenz S, Andrews J, Su ZQ, Grasl C, Jandt KD. Macromolecules 2016, 49, 3550–3558.10.1021/acs.macromol.6b00153Search in Google Scholar
[17] Liu YL, Shao J, Sun JR, Bian XC, Feng LD, Xiang S, Sun B, Chen ZM, Li G, Chen XS. Polym. Degrad. Stabil. 2014, 101, 10–17.10.1016/j.polymdegradstab.2014.01.023Search in Google Scholar
[18] Han LL, Yu CT, Zhou J, Shan GR, Bao YZ, Yun XY, Dong T, Pan PJ. Polymer 2016, 103, 376–386.10.1016/j.polymer.2016.09.073Search in Google Scholar
[19] Tsuji H. Macromol. Biosci. 2005, 5, 569–597.10.1002/mabi.200500062Search in Google Scholar
[20] Sawai D, Tsugane Y, Tamada M, Kanamoto T, Sungil M, Hyon SH. J. Polym. Sci. Pol. Phys. 2007, 45, 2632–2639.10.1002/polb.21270Search in Google Scholar
[21] Brizzolara D, Cantow HJ, Diederichs K, Keller E. Macromolecules 1996, 29, 191–197.10.1021/ma951144eSearch in Google Scholar
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Articles in the same Issue
- Frontmatter
- Material properties
- Structure mediation and ductility enhancement of poly(l-lactide) by random copolymer poly(d-lactide-co-ε-caprolactone)
- Morphological characterization, thermal, and mechanical properties of compatibilized high density polyethylene/polystyrene/organobentonite ternary nanocomposites
- Preparation and assembly
- Simultaneous toughening and reinforcing of cyanate ester/benzoxazine resins with improved mechanical and thermal properties by using hyperbranched polyesters
- Surface modification of Sb-SnO2/potassium titanate composite and their performance for acrylic coatings
- Poly (vinyl alcohol)/nano-diamond composite films and hydrogels prepared by gamma ray
- Engineering and processing
- Study on structures and properties of ultra-hot drawing UHMWPE fibers fabricated via dry spinning method
- Separation of CO2/CH4 and O2/N2 by polysulfone hollow fiber membranes: effects of membrane support properties and surface coating materials
- Electric field-induced alignment of MWCNTs during the processing of PP/MWCNT composites: effects on electrical, dielectric, and rheological properties
- A molecular modeling study for miscibility of polyimide/polythene mixing systems with/without compatibilizer
- Analysis and quantitative estimation of phenolic antioxidants in polypropylene packaging for fat products
- Effects of ultrasonic injection molding conditions on the plate processing characteristics of PMMA
Articles in the same Issue
- Frontmatter
- Material properties
- Structure mediation and ductility enhancement of poly(l-lactide) by random copolymer poly(d-lactide-co-ε-caprolactone)
- Morphological characterization, thermal, and mechanical properties of compatibilized high density polyethylene/polystyrene/organobentonite ternary nanocomposites
- Preparation and assembly
- Simultaneous toughening and reinforcing of cyanate ester/benzoxazine resins with improved mechanical and thermal properties by using hyperbranched polyesters
- Surface modification of Sb-SnO2/potassium titanate composite and their performance for acrylic coatings
- Poly (vinyl alcohol)/nano-diamond composite films and hydrogels prepared by gamma ray
- Engineering and processing
- Study on structures and properties of ultra-hot drawing UHMWPE fibers fabricated via dry spinning method
- Separation of CO2/CH4 and O2/N2 by polysulfone hollow fiber membranes: effects of membrane support properties and surface coating materials
- Electric field-induced alignment of MWCNTs during the processing of PP/MWCNT composites: effects on electrical, dielectric, and rheological properties
- A molecular modeling study for miscibility of polyimide/polythene mixing systems with/without compatibilizer
- Analysis and quantitative estimation of phenolic antioxidants in polypropylene packaging for fat products
- Effects of ultrasonic injection molding conditions on the plate processing characteristics of PMMA
