• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
  • Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Effect of molecular weight on crystallization behavior of poly (lactic acid) under isotherm and non‐isotherm conditions

Article dans une revue avec comité de lecture
Author
ZIRAK, Nader
ccSHIRINBAYAN, Mohammadali
FARZANEH, Sedigheh
571200 P4Tech [P4Tech]
ccTCHARKHTCHI, Abbas
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/21756
DOI
10.1002/pat.5603
Date
2022
Journal
Polymers for Advanced Technologies

Abstract

The effect of molecular weight on the crystallization behavior of poly(lactic acid) (PLA) both isothermally and non-isothermally was studied using differential scanning calorimetry and polarized optical microscopy. Two distinct crystal forms (α and α′) were investigated under normal conditions of crystallization for different molecular weights. Using microscopy, the growth rate of spherulites was measured and the nucleation rate was estimated. Heterogeneous nucleation and morphology with a variant α and α′ forms have been proposed. Spherulites from low molecular mass PLA contained more interlamellar amorphous phase. In addition, the results showed more rapid crystallization of α′ than the α form in isothermal conditions.

Files in this item

Name:
PIMM_ PAT_ 2021_TCHARKHTCHI.pdf
Size:
3.285Mb
Format:
PDF
Embargoed until:
2022-07-01
View/Open

Collections

  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Related items

Showing items related by title, author, creator and subject.

  • An overview of filtration efficiency through the masks: Mechanisms of the aerosols penetration 
    Article dans une revue avec comité de lecture
    ABBASNEZHAD, Navideh; ZARBINI SEYDANI, Mohammad; ZIRAK, Nader; FARZANEH, Sedigheh; ccSHIRINBAYAN, Mohammadali; ccTCHARKHTCHI, Abbas (KeAi Publishing, 2021)
    The masks have always been mentioned as an effective tool against environmental threats. They are considered as protective equipment to preserve the respiratory system against the non-desirable air droplets and aerosols ...
  • Optimal dome design for 700 bar hydrogen tank type IV: Hyperelliptic functions and shape factor 
    Article dans une revue avec comité de lecture
    ccTCHARKHTCHI, Abbas; ccVILLALONGA, Stephane; ccZIRAK, Nader; LUCAS, Albert; ccFARZANEH, Sedigheh; ccSHIRINBAYAN, Mohammadali (2023)
    The design of 700-bar composite tanks considering the safety factor imposes resistance to a bursting pressure greater than 1645 bars remains difficult which leads to the addition of carbon fibers. On the other hand, the ...
  • Some New Concepts of Shape Memory Effect of Polymers 
    Article dans une revue avec comité de lecture
    ABDALLAH-ELHIRTSI, Sofiane; EBRAHIMI, Kambiz; ccSHIRINBAYAN, Mohammadali; FARZANEH, Sedigheh; ccTCHARKHTCHI, Abbas; ccFITOUSSI, Joseph (MDPI, 2014)
    In this study some new concepts regarding certain aspects related to shape memory polymers are presented. A blend of polylactic acid (PLA) (80%) and polybutylene succinate (PBS) (20%) was prepared first by extrusion, then ...
  • Effect of build orientation and post-curing of (meth)acrylate‐based photocurable resin fabricated by stereolithography on the mechanical behavior from quasi-static to high strain rate loadings 
    Article dans une revue avec comité de lecture
    ccSHIRINBAYAN, Mohammadali; ZIRAK, Nader; SADDAOUI, Ouiza; MAMMERI, Amrid; AZZOUZ, Kamel; ccBENFRIHA, Khaled; ccTCHARKHTCHI, Abbas; ccFITOUSSI, Joseph (Springer Science and Business Media LLC, 2022-10)
    Stereolithography (SLA) is becoming an important fabrication method among the different additive manufacturing techniques. This study investigates the effect of high strain rate on mechanical behavior, considering the fact ...
  • Design, fabrication, and evaluation of a small turbine blade manufactured by rotational molding 
    Article dans une revue avec comité de lecture
    ccPEREIRA, Michaël; ccZIRAK, Nader; ccSHIRINBAYAN, Mohammadali; ZYWICA, Grzegorz; ccTCHARKHTCHI, Abbas (Springer Science and Business Media LLC, 2023-08)
    The notion of renewable energy has become deeply ingrained in the world, captivating an increasing number of researchers and industry professionals who invest substantial resources to advance the development of more efficient ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales