Hoffman-Lauritzen analysis of crystallization of hydrolyzed poly(butylene succinate-co-adipate)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F25%3A63597020" target="_blank" >RIV/70883521:28110/25:63597020 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2073-4352/15/7/645" target="_blank" >https://www.mdpi.com/2073-4352/15/7/645</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/cryst15070645" target="_blank" >10.3390/cryst15070645</a>

Result language

angličtina

Original language name

Hoffman-Lauritzen analysis of crystallization of hydrolyzed poly(butylene succinate-co-adipate)

Original language description

This study systematically investigates the impact of hydrolytic degradation on the crystallization kinetics and morphology of poly(butylene succinate-co-adipate) (PBSA). Gel Permeation Chromatography (GPC) confirmed extensive chain scission, significantly reducing the polymer’s weight-average molecular weight (Mw from ~103,000 to ~16,000 g/mol) and broadening its polydispersity index (PDI from ~2 to 7 after 64 days). Differential scanning calorimetry (DSC) analysis revealed that hydrolytic degradation dramatically accelerated crystallization rates, reducing crystallization time roughly 10-fold (e.g., from ~3000 s to ~300 s), and crystallinity increased from 34% to 63%. Multiple melting peaks suggested the presence of lamellae with varying thicknesses, consistent with the Gibbs–Thomson equation. Isothermal crystallization kinetics were evaluated using the Avrami equation (with n ≈ 3), reciprocal half-time of crystallization, and a novel inflection point slope method, all confirming accelerated crystallization; for instance, the slope increased from 0.00517 to 0.05203. Polarized optical microscopy (POM) revealed evolving spherulite morphologies, including hexagonal and flower-like dendritic spherulites with diamond-shape ends, while wide-angle X-ray diffraction (WAXD) showed a crystallization range shift to higher temperatures (e.g., from 72–61 °C to 82–71 °C) and a 14% increase in crystallite diameter, aligning with increased melting point and lamellar thickness and overall increased crystallinity.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Crystals

ISSN

2073-4352

e-ISSN

—

Volume of the periodical

15

Issue of the periodical within the volume

7

Country of publishing house

CH - SWITZERLAND

Number of pages

33

Pages from-to

nestránkováno

UT code for WoS article

001540837200001

EID of the result in the Scopus database

2-s2.0-105011618193