Effect of sepiolite on the crystallization behavior of biodegradable poly(lactic acid) as an efficient nucleating agent

2014 ◽  
Vol 55 (5) ◽  
pp. 1104-1112 ◽  
Author(s):  
Jun Wu ◽  
Xiaoxuan Zou ◽  
Bo Jing ◽  
Wenli Dai
Keyword(s):  
Lactic Acid ◽  
Crystallization Behavior ◽  
Nucleating Agent ◽  
Poly Lactic Acid ◽  
Biodegradable Poly

Crystallization kinetics and morphology of biodegradable poly(lactic acid) with a hydrazide nucleating agent

2015 ◽  
Vol 45 ◽  
pp. 101-106 ◽  
Author(s):  
Ting Xu ◽  
Anjiang Zhang ◽  
Yongqing Zhao ◽  
Zhen Han ◽  
Lixin Xue
Keyword(s):  
Lactic Acid ◽  
Crystallization Kinetics ◽  
Nucleating Agent ◽  
Poly Lactic Acid ◽  
Biodegradable Poly

Crystallization Properties of Nucleated Poly(lactic acid)

2012 ◽  
Vol 549 ◽  
pp. 322-326 ◽  
Author(s):  
Yong Chen ◽  
Qiang Dou
Keyword(s):  
Lactic Acid ◽  
Crystallization Behavior ◽  
Polarized Light ◽  
Nucleating Agent ◽  
Poly Lactic Acid ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Crystallization Properties ◽  
Melting And Crystallization

The effect of a nucleating agent (NT-C) on the crystallization behavior of poly(lactic acid) (PLA) was studied. The melting and crystallization behavior and spherulitic morphology of the nucleated PLA were investigated by means of differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and polarized light microscopy (PLM). It is found that the crystallization temperature and crystallinity increase, the spherulitic size decrease for the nucleated PLA. But the crystal structure of the nucleated PLA is not changed.

Isothermal Crystallization Behavior and Kinetics of Poly (lactic acid) Filled with a Novel Nucleating Agent

2014 ◽  
Vol 887-888 ◽  
pp. 716-722
Author(s):  
Nai Xu ◽  
Xing Hui Wang ◽  
Li Sha Pan ◽  
Su Juan Pang ◽  
Xuan Chen ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Isothermal Crystallization ◽  
Crystallization Behavior ◽  
Nucleating Agent ◽  
Poly Lactic Acid ◽  
Scanning Calorimetry ◽  
Nucleation Effect ◽  
Amide Derivatives ◽  
Aromatic Amide ◽  
Kinetics Of

The crystallization behavior and crystalline structure of poly (lactic acid) (PLA) filled with a novel nucleating agent (TMC328), which is a kind of aromatic amide derivatives, were investigated using differential scanning calorimetry (DSC) and wide angle X-ray (XRD). In isothermal crystallization from the melt, the present of TMC328 remarkably affected the isothermal crystalline behaviors of PLA. PLA/0.5% TMC328 sample exhibited very short crystallization half-times at 90-130 °C. Furthermore, the Avrami theory was used to describe the isothermal crystallization kinetics of PLA/TMC328 samples. It is confirmed that TMC328 showed a significant heterogeneous nucleation effect on the crystallization of PLA matrix. Moreover, XRD measurement indicates that TMC328 is a kind of α-form nucleating agent for PLA.

scholarly journals The Effect of Shear Flow on the Crystallization Behavior of Poly (lactic acid) with Dibenzoylhydrazide Nucleating Agent

Seikei-Kakou ◽  
2018 ◽  
Vol 30 (10) ◽  
pp. 555-560
Author(s):  
Kazuhiro Umenaka ◽  
Kohei Takahashi ◽  
Kiyohito Koyama ◽  
Masataka Sugimoto
Keyword(s):  
Lactic Acid ◽  
Shear Flow ◽  
Crystallization Behavior ◽  
Nucleating Agent ◽  
Poly Lactic Acid

Effects of Poly(butyleneadipate-co-terephthalate) as a Macromolecular Nucleating Agent on the Crystallization and Foaming Behavior of Biodegradable Poly(lactic acid)

2017 ◽  
Vol 36 (2) ◽  
pp. 75-96 ◽  
Author(s):  
Wei Liu ◽  
Peng Chen ◽  
Xiangdong Wang ◽  
Fuchun Wang ◽  
Yujiao Wu
Keyword(s):  
Lactic Acid ◽  
Cellular Structure ◽  
Crystal Morphology ◽  
Nucleating Agent ◽  
Expansion Ratio ◽  
Poly Lactic Acid ◽  
Surrounding Area ◽  
Foaming Behavior ◽  
Biodegradable Poly ◽  
Macromolecular Crystallization

The effect of a bio-based macromolecule, poly(butylene adipate-co-terephthalate) (PBAT), on the crystallization and foaming behavior of poly(lactic acid) (PLA) was evaluated. The crystallization kinetics results show that the addition of PBAT improved the crystallization of PLA by increasing the overall crystallinity and enhancing the crystal morphology of PLA. The massive crystallization zones may have prevented the escape of foaming gases to the surrounding area; the expansion ratio of the PLA foams increased from 4.87 to 10.94. Thus, a novel macromolecular crystallization nucleating agent for PLA was developed; the effect of the crystallization of PLA on its foaming behavior was also investigated. A high expansion ratio and finer cellular structure of PLA foam were obtained by optimizing the PBAT content.

Crystallization behavior and morphology of poly(lactic acid) with a novel nucleating agent

2014 ◽  
Vol 132 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
Guo-Xiang Zou ◽  
Qing-Wei Jiao ◽  
Xin Zhang ◽  
Cai-Xia Zhao ◽  
Jin-Chun Li
Keyword(s):  
Lactic Acid ◽  
Crystallization Behavior ◽  
Nucleating Agent ◽  
Poly Lactic Acid

Crystallization Behavior of Poly(lactic acid) Nucleated by a Hydrazide Compound

2013 ◽  
Vol 710 ◽  
pp. 85-88 ◽  
Author(s):  
Cheng Lang Li ◽  
Qiang Dou
Keyword(s):  
Differential Scanning Calorimetry ◽  
Lactic Acid ◽  
Crystallization Behavior ◽  
Polarized Light ◽  
Nucleating Agent ◽  
Poly Lactic Acid ◽  
Melt Blending ◽  
Scanning Calorimetry ◽  
Internal Mixer ◽  
Melting And Crystallization

A hydrazide compound (N-4) was used as a nucleating agent to induce the crystallization of poly (lactic acid) (PLA). PLA/N-4 samples were prepared by melt blending in an internal mixer. The melting and crystallization behavior and spherulitic morphology of the samples doped with different contents of N-4 were investigated by means of differential scanning calorimetry (DSC) and polarized light microscopy (PLM). It is found that the crystallization temperature and crystallinity increased but the spherulitic size of PLA decreased for the nucleated samples. It is indicated that N-4 is an effective nucleating agent for PLA.

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