• 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
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
SHIRINBAYAN, Mohammadali
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
FARZANEH, Sedigheh
571200 P4Tech [P4Tech]
TCHARKHTCHI, 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
    TCHARKHTCHI, Abbas; ABBASNEZHAD, Navideh; ZARBINI SEYDANI, Mohammad; ZIRAK, Nader; FARZANEH, Sedigheh; SHIRINBAYAN, Mohammadali (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 ...
  • On the importance of physical and mechanical properties of PLGA films during drug release 
    Article dans une revue avec comité de lecture
    ABBASNEZHAD, Navideh; ZIRAK, Nader; SHIRINBAYAN, Mohammadali; TCHARKHTCHI, Abbas; BAKIR, Farid (Elsevier, 2021)
    Physical and mechanical properties of the drug-incorporated polymer play a significant role in the release behavior from the drug carriers. Understanding the relative extent of variation in the physical and mechanical ...
  • Toward Polymeric and Polymer Composites Impeller Fabrication 
    Article dans une revue avec comité de lecture
    ZIRAK, Nader; SHIRINBAYAN, Mohammadali; DELIGANT, Michael; TCHARKHTCHI, Abbas (MDPI AG, 2021)
    Impellers are referred to as a core component of turbomachinery. The use of impellers in various applications is considered an integral part of the industry. So, increased performance and the optimization of impellers have ...
  • Stereolithography of (meth)acrylate-based photocurable resin: Thermal and mechanical properties 
    Article dans une revue avec comité de lecture
    ZIRAK, Nader; SHIRINBAYAN, Mohammadali; BENFRIHA, Khaled; DELIGANT, Michael; TCHARKHTCHI, Abbas (WILEY, 2022)
    Additive manufacturing (AM) has attracted a lot of attention in the industry and studies due to the ability to fabricate parts in different sizes and shapes along with economic costs. Among the different three-dimensional ...
  • Controlled release from polyurethane films: Drug release mechanisms 
    Article dans une revue avec comité de lecture
    ABBASNEZHAD, Navideh; ZIRAK, Nader; SHIRINBAYAN, Mohammadali; KOUIDRI, Smaine; SALAHINEJAD, Erfan; TCHARKHTCHI, Abbas; BAKIR, Farid (Wiley, 2021)
    In this study, polyurethane-films loaded with diclofenac were used to analyze the drug release kinetics and mechanisms. For this purpose, the experimental procedures were developed under static and dynamic conditions with ...

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