Phase Morphology and Properties of Ternary PLA/PPC/OMMT Nanocomposties

doi:10.19491/j.issn.1001-9278.2018.02.008

Abstract

Abstract: PLA/PPC blends and PLA/PPC/OMMT(organically modified layered silicate) nanocomposites were prepared by melt mixing in a co-rotating twin-screw extruder. Phase morphology, thermal behavior, and mechanical properties of the resultant PLA/PPC blends and PLA/PPC/OMMT nanocomposites were analyzed by polarizing optical microscope, differential scanning calorimetry and universal testing machine equipments, respectively. The results showed that there were two Tg occurred between PLA and PPC, when the loadings of PPC are equal to and more than 30 wt %, which suggests that the compatibility of PLA and PPC becomes worse, and phase separation occurred obviously at the loading of 50 wt % PPC. With the increasing loadings of PPC, the elongation at break of PLA/PPC blends went up. When the mass fractions of OMMT were less than 1.5 wt %,the crystallinity, tensile strength, elongation at break and impact strength of the nanocomposites all increased.

CLC Number:

TQ327.8

References

[1]RHIM J W，HONG S I, Ha CS.Tensile,water vapor barrier and antimicrobial properties of PLAnanoclay composite films[J].LWT - Food Sci Technol, 2009, 42(2):612-617 [2]LIM L T, AURAS R, ROBINO M.Processing Technologies for Poly(lactic acid)[J].Progress in Polymer Science, 2008, 33(8):820-852 [3]PETERSSON L, OKSMAN K.Biopolymer based nanocomposites: Comparing layered silicates and microcrystalline cellulose as nanoreinforcement[J].Composites Science & Technology, 2006, 66(13):2187-2196 [4]NIEDDU E, MAZZUCCO L, GENTILE P, et al.Preparation and biodegradation of clay composites of PLA[J].React & Funct Polym, 2009, 69(9):371-379 [5] ZAIDI L, KACI M, BRUZAUD S, et al.Effect of natural weather on the structure and properties of polylactide/Cloisite 30B nanocomposites. Polym Degrad Stabil, 2010, 95: 1751-1758. [6]WANG X, LIU W, LI H, et al.Study on the effect of dispersion phase morphology on porous structure of poly (lactic acid)poly (ethylene terephthalate glycol-modified) blending foams[J].Polymer, 2011, 54(21):5839-5851 [7]MATUANA L M.Solid State Microcellular Foamed Poly (lactic acid): Morphology and Property Characterization[J].Bioresource Technol, 2008, 99(9):3643-3650 [8]REN J.Biodegrable Poly (Lactic Acid)-Synthesis, Modification, Processing and Applications. Beijing: Qinghua University Press, 2011: 38. [9] LI H, ZHANG J W.Research progress in toughening modification of poly(lactic acid).Journal of Polymer Science Part B Polymer Physics, 2011, 49（15）, 1051?1083. [10]VILAY V，MARIATTI M，AHMAD Z.et al[J].Characterization of the mechanical and thermal properties and morphological behavior of biodegradable poly(L-lactide)poly(ε-caprolactone) and poly(L-lactide)poly(butylene succinate-co-L-lactate) polymeric blends. Journal of Applied Polymer Science, 2009, 114(3):1784-1792 [11]LIU H, CHEN, F, LIU, B.et al[J].Super Toughened Poly(lactic acid) Ternary Blends by Simultaneous Dynamic Vulcanization and Interfacial Compatibilization .Macromolecules, 2010, 43(14):6058-6066 [12] RATHI S, CHEN X, COUGHLIN E, et al.Toughening Semicrystalline Poly(lactic acid) by Morphology Alteration.Polymer, 2011, 52（19）, 4184?4188. [13]BREITENBACH A， KISSEL， T.Biodegradable comb polyesters: part II Erosion and release properties of poly(vinyl alcohol)-g-poly(lactic-co-glycolic acid).Polymer 2000, 41（13）, 4781?4792. [14] KIMURA Y, MATSUZAKI Y， YAMANE J, et al.Preparation of block copoly(ester-ether) comprising poly(l-lactide) and poly(oxypropylene) and degradation of its fibre in vitro and in vivo.Polymer, 1989, 30（7）, 1342?1349. [15] YAMAOKA T, TAKAHASHI Y, OHTA T, et al.Synthesis and properties of multiblock copolymers consisting of poly(L-lactic acid) and poly(oxypropylene- co-oxyethylene) prepared by direct polycondensation. J. Polym. Sci., Polym. Chem., 1999, 37（10）, 1513?1522. [16] CHEN C, CHUEH J, TSENG H, ET AL.Preparation and Characterization of Biodegradable PLA Polymeric Blends. Biomaterials, 2003, 24（7）, 1167?1173. [17] CHEN G, KIM H, KIM E, et al.Compatibilization-like effect of reactive organoclay on poly(L-lactide)/(butylene succinate)blends. Polymer 2005, 46（2005）, 11829?11836. [18]OKSMAN K, SKRIFVARS M, SELIN J.Natural fibres as reinforcement in polylactic acid (PLA) composites[J].Composites Science and Technology, 2003, 63(9):1317-1324 [19]YEH J T, TSOU C H, HUANG C Y, et al.Compatible and Crystallization Properties of Poly(lactic acid)Poly(butylene adipate-co-terephthalate) Blends[J].Journal of Applied Polymer Science, 2010, 116(2):680-687 [20]JIANG L, WOLCOTT M, ZHANG J.Study of Biodegradable PolylactidePoly(butylene adipate-co-terephthalate) Blends[J].Biomacromolecules, 2006, 7(1):199- [21]QUERO E, MüLLER A, SIGNORI F, et al.Isothermal Cold-Crystallization of PLAPBAT Blends With and Without the Addition of Acetyl Tributyl Citrate[J].Macromolecular Chemistry & Physics, 2012, 213(1):36-48 [22] LI K, PENG J, TURNG L S, et al.Dynamic Rheological Behavior and Morphology of Polylactide/Poly(butylenes adipate-co-terephthalate) Blends with Various Composition Ratios. Advances in Polymer Technology, 2011; 30(2), 150–157. [23]FUKUSHIMA K, ABBATE C, TABUANI D, et al.Biodegradation of poly (lactic acid) and its nanocomposites[J].Polymer Degradation & Stability, 2009, 94(10):1646-1655 [24] OKAMOTO M.Biodegradable Polymer/Layered Silicate Nanocomposites: A Review, in: Surya Mallapragada, Balaji Narasimhan (Ed.), Handbook of Biodegradable Polymeric Materials and Their Application. Surya Mallapragada and Balaji Narasimahn; 2005: 1-45. [25]MARRAS S I, ZUBURTIKUDIS I, PANAYIOTOU C.Nanostructure vs[J].microstructure: Morphological and thermomechanical characterization of poly (L-lactic acid)layered silicate hybrids. Eur Polym J, 2007, 43(6):2191-2206 [26]RAY S S, YAMADA K, OKAMOTO M, et al.New polylactidelayered silicate nanocomposites[J].Designing of materials with desired properties.Polymer, 2003, 44(21):6633-6646 [27]PLUTA M, JESZKA J K, BOITEUX G.Polylactidemontmorillonite nanocomposites: Structure,dielectric,viscoelastic and thermal properties[J].Eur Polym J, 2007, 43(7):2819-2835 [28]LEE J H, PARK T G, PARK H S, et al.Thermal and Mechanical Characteristics of Poly(l-lactic acid) Nanocomposite Scaffold[J].Biomater, 2003, 24(16):2773-2778 [29]YU Z Y, YIN J B, YAN S F, et al.Biodegradable Poly (L-lactide)Poly(3-caprolactone)-modified Montmorillonite Nanocomposites: Preparation and Characterization[J].Polymer, 2007, 48(21):6439-6447 [30]NAJAFI N, HEUZEY C M, CARREAU J P et al.Control of Thermal Degradation of Polylactide (PLA)-clay Nanocomposites Using Chain Extenders[J].Polym Degrad Stabil, 2012, 97(4):554-565 [31]URBANCZYK L, NGOUNDJO F, ALEXANDRE M, et al.Synthesis of PolylactideClay Nanocomposites by In Situ Intercalative Polymerization in Supercritical Carbon Dioxide[J].Eur Polym J, 2009, 45(3):643-648 [32]KOH H C, PARK J S, JEONG M A, et al.Preparation and Gas Permeation Properties of Biodegradable PolymerLayered Silicate Nanocomposite Membranes[J].Desalination, 2008, 233(1):201-209 [33]THELLEN C, ORROTH C, FROIO D, et al.Influence of Montmorillonite Layered Silicate on Plasticized Poly(L-lactide) Blown Films[J].Polymer, 2005, 46(25):11716-11727 [34]ZENKIEWICZ M, RICHERT J, ROZANSKI A.Effect of Blow Moulding Ratio on Barrier Properties of Polylactide Nanocomposite films[J].Polym Test, 2010, 29(2):251-257 [35]RAY S S, YAMADA K, OKAMOTO M, et al.New PolylactideLayered Silicate Nanocomposites[J].High-performance Biodegradable Materials. Chem Mater, 2003, 15(7):1456-1465 [36]SHI X, GAN Z.Preparation and characterization of poly(propylene carbonate)/montmorillonite nanocomposites by solution intercalation.Eur. Polym. J., 2007, 43, 4852?4858. [37]MA X, YU J, WANG N.Compatibility Characterization of Poly(lactic acid)Poly(propylene carbonate) Blends[J].Journal of Polymer Science: Part B: Polymer Physics, 2006, 44(1):94-101 [38] GE X, ZHU Q, MENG Y.Fabrication and Characterization of Biodegradable Poly(propylene Carbonate)/Wood Flour Composites[J].Appl. Polym. Sci. 2006, 99（3）, 782?787. [39] HIROTSU T, KETELAARS A, NAKAYAMA K.Biodegradation of poly(ε-caprolactone)–polycarbonate blend sheets[J]. Polym. Degrad.Stab. 2000, 68（3）, 311?316. [40]LI J, LAI M, LIU J.Effect of poly(propylene carbonate) on the crystallization and melting behavior of poly(β-hydroxybutyrate-co-β-hydroxyvalerate)[J][J].Journal of Applied Polymerence, 2004, 92(4):2514-2521 [41]GAO M, REN Z, YAN S K.An Optical Microscopy Study on the Phase Structure of Poly (L-lactide acid)Poly(propylene carbonate) Blends[J].Journal of Physical Chemistry B, 2012, 116(32):9832-9837 [42] MAIO E D, LANNACE S, SORRENTINO L, et al.Isothermal crystallization in PCL/clay nanocomposites investigated with thermal and rheometric methods[J]. Polymer 45 (2004) 8893–8900. [43]GARLOTTA D.A literature review of poly (lactic acid)[J].Journal of Polymers and the Environment, 2001, 9(2):63-84 [44]SARASUA J R, ARRAIZA A L, BALERDI P, et al.Crystallinity and mechanical properties of optically pure polylactides and their blends[J].Polymer Engineering & Science, 2005, 45(5):745-753 [45]KISTER G, CASSANAS G, VERT M, et al.Vibrational analysis of poly(l-lactic acid)[J].Journal of Raman Spectroscopy, 2010, 26(4):307-311 [46] KAWASHIMA N, OGAWA S, OBUCHI S, et al.Biopolymers polyesters III applications and commercial products. Weinheim: Wiley-VCH Verlag GmbH; 2002. [47] HARTMANN MH.Advances in the commercialization of poly-(lactic acid)[J]. Polym Prepr (Am Chem Soc, Div Polym Chem), 1999; 40(1): 570-1. [48] KISTER G, CASSANAS G, VERT M.Effects of morphology, conformation and configuration on the IR and Ramanspectra of various poly (lactic acid)[J]. Polymer, 1998; 39（2）: 267-73. [49] KISHORE K, VASANTHAKUMARI R.Nucleation parameters for polymer crystallization from non-isothermal thermal analysis[J]. Colloid Polym Sci, 1988; 266（11）: 999-1002. [50] KISHORE K, VASANTHAKUMARI R, PENNINGS A J.Isothermal melting behavior of poly (l-lactic acid)[J]. J Polym Sci Part B: Polym Phys, 1984; 22（4）: 537-42. [51]RAY S S, BOUSMINA M.Biodegradable polymers and their layered silicate nanocomposites: In greening the 21st century materials world[J].Prog Mater Sci, 2005, 50(2005):962-1079 [52]LIU X, WU Q.Non-isothermal crystallization behaviors of polyamide 6/clay nanocomposites[J]. Eur Polym J 2002; 38（7）:1383. [53]TSENG C R, WU J Y, LEE H Y, et al.Corrigendum to “Poly(oxypropylene)-amide grafted polypropylene as novel compatibilizer for PP and PA6 blends”[J].Polymer 2001; 42（2）:713-725.