Miscibility, mechanical and thermal properties of poly(lactic acid)/polyester-diol blends

Okamoto, K.; Ichikawa, Tomokazu; Yokohara, Tadashi; Yamaguchi, Masayuki

doi:10.1016/j.eurpolymj.2009.05.011

Cited by 74 publications

(43 citation statements)

References 34 publications

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“…Development of biodegradable materials based on PHB has become a very attractive option since PHB can be processed as a synthetic thermoplastic polymer by the addition of plasticizers. 28 However, monomeric plasticizers are prone to migration and consequently, plasticizers with rather high molar mass and low mobility are necessary. The primary role of a plasticizer is to improve the flexibility and processability of polymers by lowering the glass transition temperature (T g ) and it may also affect properties such as stress, hardness, density, resistance to fracture, degree of crystallinity, optical transparency, electric conductivity, and resistance to biological degradation, amongst other physical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, PHB crystallinity could be reduced and its properties are improved by forming a copolymer with hydroxyvalerate monomer (PHB-HV) 22 or obtaining PHB blends with an amorphous polymer 23 that could act as polymeric plasticizers, for instance poly(ethylene oxide), 24 poly(vinyl acetate), 25 poly(vinyl alcohol), 26 poly(L-lactic acid), 27 and low molar mass polyadipate. Also, A is a potential plasticizer of poly(L-lactic acid) 28,36 and secondary plasticizer of PVC in ternary blends. According to miscibility, the plasticizers with low molar mass present larger entropy for mixing than those with high molar mass.…”

Section: Introductionmentioning

confidence: 99%

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Effect of two different plasticizers on the properties of poly(3‐hydroxybutyrate) binary and ternary blends

Seoane

Manfredi

Cyras

2017

J of Applied Polymer Sci

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Plasticized poly(3-hydroxybutyrate) (PHB) films were obtained by solvent casting. The effects of two different additives on several properties of PHB have been examined, utilizing tributyrin and poly[di(ethyleneglycol) adipate] (A). Based on changes in the glass transition temperature (T g ) and cold crystallization temperature of host PHB, the two components are miscible with PHB and they can act as plasticizers. Binary and ternary blends were obtained by adding both plasticizers separately or together, respectively. The effect of plasticizer addition on the optical transparency, water vapor permeability, and tensile properties of the films was studied. It was found that the blends remain transparent and water vapor permeability was maintained constant until a 20 wt % of plasticizer content. Plasticizing effect was corroborated and it depended on the plasticizer percentage. Binary blends had an increased plasticity, in concordance with T g diminution of PHB. Although ternary blends presented T g diminution, mechanical properties were not improved probaby due to strong interactions between plasticizers. Finally, binary and ternary blends presented enhanced properties, causing an increment on processability. A correct knowledge between the formulation of the film and the role played by each component could allow getting custom films.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of two different plasticizers on the properties of poly(3‐hydroxybutyrate) binary and ternary blends

Seoane

Manfredi

Cyras

2017

J of Applied Polymer Sci

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“…At least five kinds of plasticizers with high Mw and being miscible to PLA without any compatibilizer have been reported so far, i.e. PEG [79,224,225], poly(propylene glycol) (PPG) [226], atactic poly(3-hydroxybutyrate) (a-PHB) [227], polyester diol (PED) as poly(diethylene adipate) (PDEA) [228], tributyl citrate-oligoester (TbC-oligoesters), diethyl bishydroxymethyl malonate oligoester (DBM-oligoester) and oligoesteramide (DBM-oligoesteramide) [223,229,230]. Despite the wide diversity, the choice of plasticizer used as a modifier for PLA is limited by the legislative or technical requirements of the application, and in this context, its selection becomes more difficult [223,230,231].…”

Section: Plasticizer and Polymer Blendingmentioning

confidence: 99%

Physical and mechanical properties of PLA, and their functions in widespread applications — A comprehensive review

Farah

Anderson

Langer

2016

Advanced Drug Delivery Reviews

2,376

1,486

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Available online xxxxPoly(lactic acid) (PLA), so far, is the most extensively researched and utilized biodegradable aliphatic polyester in human history. Due to its merits, PLA is a leading biomaterial for numerous applications in medicine as well as in industry replacing conventional petrochemical-based polymers. The main purpose of this review is to elaborate the mechanical and physical properties that affect its stability, processability, degradation, PLA-other polymers immiscibility, aging and recyclability, and therefore its potential suitability to fulfill specific application requirements. This review also summarizes variations in these properties during PLA processing (i.e. thermal degradation and recyclability), biodegradation, packaging and sterilization, and aging (i.e. weathering and hygrothermal). In addition, we discuss up-to-date strategies for PLA properties improvements including components and plasticizer blending, nucleation agent addition, and PLA modifications and nanoformulations. Incorporating better understanding of the role of these properties with available improvement strategies is the key for successful utilization of PLA and its copolymers/composites/blends to maximize their fit with worldwide application needs.© 2016 Elsevier B.V. All rights reserved. Contents lists available at ScienceDirectAdvanced Drug Delivery Reviews

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“…However, due to the high costs and environment pollution involved in the polymer synthesis processes, the study of polymer blends was notably developed in the last few decades [1][2][3][4][5][6] . These blends, by means of the simple mix of functionalized homo and copolymers, have been a very useful way to obtain new materials with novel properties [7][8][9][10] . When one of the polymer components is substituted by a low molecular weight compound (LMWC), interesting materials are also obtained from both a fundamental and applied point of view [11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Blends of Poly(4-Vinylpyridine) and Dihydric Phenols: Thermal and Infrared Spectroscopic Studies. Part Iii

Gatica¹,

MONARES²

2010

J. Chil. Chem. Soc.

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The blending of the functionalized vinyl polymer poly(4-vinylpyridine) (P4VPy) with the low molecular weight compounds 4,4'-biphenol (44BP) and 2,2'-biphenol (22BP) was studied. The binary systems formed by P4VPy and 44BP (blend A) and by P4VPy and 22BP (blend B) were characterized by Differential Scanning Calorimetry (DSC) to study the effect of the blending on characteristic transition, such as the glass transition of P4VPy and the melting of 44BP and 22BP. The results suggest the postulate that the components of both blends are miscible, with a comparatively higher intermolecular interaction level in the case of blend A. Using Fourier Transform Infrared Spectroscopy (FTIR), the formation of hydrogen bonding between the components of the blends A and B was detected. The behaviour observed with the FTIR corroborates the DSC results. Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM) were used as additional analytical techniques and the results show a good agreement with the DSC and FTIR results and they complement the characterization of the studied systems.

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Miscibility, mechanical and thermal properties of poly(lactic acid)/polyester-diol blends

Cited by 74 publications

References 34 publications

Effect of two different plasticizers on the properties of poly(3‐hydroxybutyrate) binary and ternary blends

Effect of two different plasticizers on the properties of poly(3‐hydroxybutyrate) binary and ternary blends

Physical and mechanical properties of PLA, and their functions in widespread applications — A comprehensive review

Blends of Poly(4-Vinylpyridine) and Dihydric Phenols: Thermal and Infrared Spectroscopic Studies. Part Iii

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