Mechanical properties and morphology of biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate) blends compatibilized by transesterification

Lin, Shan; Guo, Weinan; Chunyin, Chen; Ma, Jianli; Wang, Biaobing

doi:10.1016/j.matdes.2011.11.036

Cited by 134 publications

(58 citation statements)

References 15 publications

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“…The blend with the highest tensile strength was the (60/40) PLA/TPS, which had a higher PLA content in the blend system. Lin et al (2012) reported that pure PLA has a high tensile strength but a low elongation at break value, while TPS has good flexibility properties but low tensile strength. They also reported that the addition of a second polymer could cause a decrease in the tensile strength of the PLA/polymer blend.…”

Section: Tensile Propertiesmentioning

confidence: 99%

“…Unfortunately, the incompatibility of the hydrophobic aliphatic polyesters and the hydrophilic starch makes the adhesion between the two components weak, resulting in the poor mechanical properties of the blends (Han 2005;Zhang et al 2009b;Kahar et al 2012). In order to improve the compatibility of PLA with other polymers, previous research works (Yuan et al 2009;Lin et al 2012) have focused on the use of grafting reactions, the addition of compatibilizers, and the use of reactive blending methods. In this study, the authors attempted to blend PLA with modified TPS in order to improve compatibility of the PLA/TPS blend.…”

Section: Introductionmentioning

confidence: 99%

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Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

Ibrahim¹,

Wahab²,

Uylan³

et al. 2017

BioResources

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The physical and degradation properties of polylactic (PLA)/thermoplastic starch (TPS) blends after TPS modification with citric acid (CA) were investigated. The interfacial adhesion between the PLA and TPS was expected to improve, thus enhancing the physical properties of the PLA/TPS blends. The tensile strength and Young's modulus for PLA/TPS blends at (60/40) and (40/60) blends ratio were found to increase after modification with CA. On the other hand, the elongation at break of the (60/40) blend decreased, while elongation at break of the (40/60) blend increased. Meanwhile, an additional peak at 1721 cm -1 was detected by the FTIR spectroscopic analysis, which indicated that the TPS had chemically interacted with the CA. The biodegradability properties of PLA/TPS blends were also improved after treatment with CA. The deterioration of PLA/TPS blends was attributed to the incorporation of CA; O2 from the soil was attracted to the PLA/TPS blends, thus speeding up the degradation process of the blends.

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Section: Tensile Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

Ibrahim¹,

Wahab²,

Uylan³

et al. 2017

BioResources

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“…Lin et al [103] compatibilized PLA/PBAT blends using transesterification during melt-extrusion, which was supported by varying concentrations of tetrabutyl titanate (TBT) as catalyst. The morphological studies indicated that incorporation of TBT to PLA/ PBAT blends improve interfacial adhesion between phases, which was also confirmed by enhanced mechanical properties (tensile strength, elongation at break and impact strength).…”

Section: Aliphatic Polyesters Blendsmentioning

confidence: 99%

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Formela¹,

Zedler²,

Hejna³

et al. 2018

Express Polym. Lett.

108

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Abstract.Reactive extrusion is a cost-effective and environmentally-friendly method to produce new materials with enhanced performance properties. At present, reactive extrusion allows in-situ polymerization, modification/functionalization of polymers or chemical bonding of two (or more) immiscible phases, which can be carried out on commonly used extrusion lines. Although reactive extrusion has been known for many years, its application for processing of bio-based polymer blends and composites is a relatively new direction of scientific research. This work presents a literature review on recent advances in the processing of bio-based polymer blends and composites via reactive extrusion. We described compatibilization mechanisms for different types of biodegradable polymeric materials based on: (i) aliphatic polyesters, (ii) aliphatic polyesters/starch and (iii) aliphatic polyester/natural rubber systems. A special attention was focused on conventional and dynamic cross-linking of bio-based polymer blends and composites as an effective way to prepare new materials with unique properties e.g. biodegradable thermoplastic elastomers or shape-memory materials. Advantages and limitations affecting future trends in development of biodegradable polymer blends and composites reactive extrusion are also discussed.

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“…The miscibility between different polymers plays a major role in determining the performance of their blends [3,4]. The miscibility of polymers has been widely studied by experimental methods, such as differential scanning calorimetry (DSC) [5,6], scanning electron microscopy (SEM) [7], and transmission electron microscopy (TEM) [8].…”

Section: Introductionmentioning

confidence: 99%

Miscibility analysis of polyethersulfone and polytetrafluoroethylene using the molecular dynamics method

2015

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Investigation of the miscibility between polyethersulfone (PES) and polytetrafluoroethylene (PTFE) will be helpful in the preparation of functional polymers. The miscibility between PES and PTFE in different proportions was studied using molecular dynamics (MD) simulations, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). PES and PTFE are partly miscible as the weight fraction of PES is less than 30 wt%. The interaction between PES and PTFE polymers cannot be chemical bonding, and the non-bond interaction between them will play an important role in the blending. The hydrogen bond interaction can be ignored due to its low contribution to the non-bonded energies. Compared with hydrogen bond and electrostatic interactions, Van der Waals (vdW) shows a large influence on the non-bond interaction of pure PTFE; but its contribution in PES/PTFE blends decreases with the increasing addition of PES. The presence of PTFE suppresses the mobility of PES chains; nevertheless, the mobility of PTFE chains is unremarkably influenced by PES.

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Mechanical properties and morphology of biodegradable poly(lactic acid)/poly(butylene adipate-co-terephthalate) blends compatibilized by transesterification

Cited by 134 publications

References 15 publications

Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Miscibility analysis of polyethersulfone and polytetrafluoroethylene using the molecular dynamics method

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