Effect of Orotic Acid on the Crystallization Kinetics and Morphology of Biodegradable Poly(l-lactide) as an Efficient Nucleating Agent

2011 ◽  
Vol 50 (21) ◽  
pp. 12299-12303 ◽  
Author(s):  
Zhaobin Qiu ◽  
Zhisheng Li
Keyword(s):  
Crystallization Kinetics ◽  
Orotic Acid ◽  
Nucleating Agent ◽  
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

scholarly journals Linear Diamides Derivative-Nucleated Biodegradable Poly(ethylene succinate) Polyester: Crystallization Kinetics and Aggregated Structure Manipulated by Hydrogen Bond Interaction

2021 ◽  
Author(s):  
Shanshan Zhou ◽  
Yongyan Sun ◽  
Huimin Ma ◽  
Chunfeng Jia ◽  
Xiaoyu Sun ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Crystallization Kinetics ◽  
Film Surface ◽  
Nucleating Agent ◽  
Ester Group ◽  
Hydrogen Bond Interaction ◽  
Change Rate ◽  
Nucleation Effect ◽  
Biodegradable Poly ◽  
Poly Ethylene

Abstract A linear diamides derivative (TMC300) as a nucleating agent (NA) was incorporated into biodegradable poly(ethylene succinate) (PES) to investigate effect of TMC300 on nucleation, crystallizability, crystallization kinetics, aggregated structure of PES. TMC300 enhanced significantly crystallizability and crystallization temperature of PES in cooling process at a rate of 10 ℃/min from molten state, indicating that TMC300 exhibits an excellent nucleation effect on PES. IR measurement suggested that TMC300 interacts with amorphous carbonyl and ester group, and crystalline CH2 group of PES via hydrogen bond. Change rate of carbonyl group is comparable to that of C‒C backbone of PES, regardless of the presence or absence of TMC300. Small difference of diffraction peak in WAXD measurement between neat PES and PES/TMC300 is probably attributed to spherulitic orientation on film surface of neat PES, and different spatial arrangements in the same crystal lattice. TMC300 enhanced carbon residue yield of PES/TMC300 composite, probably related to slight flame retardance effect.

Effect of Arenga Pinnata “Ijuk” Fiber as Nucleating Agent on Crystallization Kinetics of Impact Polypropylene Copolymer

2018 ◽  
Vol 923 ◽  
pp. 56-60 ◽  
Author(s):  
Mochamad Chalid ◽  
Evana Yuanita ◽  
Ghiska Ramahdita ◽  
Jaka Fajar Fatriansyah
Keyword(s):  
Crystal Growth ◽  
Crystallization Kinetics ◽  
Nucleating Agent ◽  
Avrami Equation ◽  
Nucleating Agents ◽  
Impact Polypropylene Copolymer ◽  
Kinetics Of

Impact Polypropylene Copolymer (IPC) is one of the PP type which is widely used. IPC was made with addition of ethylene in PP which decreases PP crystallinity. Many efforts have been made to improve the properties of PP crystallinity by addition of nucleating agents. In this study, we use Arenga Pinnata “Ijuk” fiber as PP nucleating agent. In order to determine the effect of “Ijuk” fiber as nucleating agents in kinetics aspect, we used DSC measurement based on Avrami equation. The results showed that the addition of ijuk decreases crystallizationhalf timeand dimension of crystal growth which indicate the effects of “Ijuk” fiber as a nucleating agent.

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