Isothermal crystallization kinetics of in situ photo and thermo aged poly(ethylene oxide) using photoDSC
Literature Information
Frédéric Fraïsse, Jean-Marie Nedelec, Jean Pierre E. Grolier
Isothermal crystallization of a high molecular weight PEO (Mw = 4 000 000) has been investigated using photoDSC. Combining light irradiation, heating and DSC analysis, photoDSC demonstrates good capability to follow the in situ photo- and thermo-ageing of semi-crystalline polymers. Isothermal crystallization of PEO was performed at 55 °C. After ageing at different temperatures ranging from 0 to 90 °C and for various periods of time, the kinetics of this crystallization was found following the Avrami theory. Avrami exponent, n, was found between 0.9 and 1.4 evidencing a one-dimension growth process. It was also found that the isothermal crystallization rate (i.e. reciprocal crystallization half-time) was exposure time, ageing temperature and light intensity dependent which makes this kinetic parameter a good indicator of following and comparing the degradation of the semi-crystalline polymers.
Related Literature
Architecture transition of supramolecular polymers through hierarchical self-assembly: from supramolecular polymers to fluorescent materials
Riqiang Li, Wenzhuo Chen, Ying Yang, Hui Li, Fenfen Xu, Zhaozhao Duan, Tongxiang Liang, Herui Wen, Wei Tian
DOI: 10.1039/D0PY00829J
Screening RAFT agents and photocatalysts to mediate PET-RAFT polymerization using a high throughput approach
Gervase Ng, Kenward Jung, Jun Li, Chenyu Wu, Liwen Zhang, Cyrille Boyer
DOI: 10.1039/D1PY01258D
Block copolymers comprising degradable poly(2-ethyl-2-oxazoline) analogues via copper-free click chemistry
DOI: 10.1039/D1PY00853F
Highly efficient UV-Vis light activated three-component photoinitiators composed of tris(trimethylsilyl)silane for polymerization of acrylates
Alicja Balcerak, Dominika Kwiatkowska, Katarzyna Iwińska, Janina Kabatc
DOI: 10.1039/D0PY00763C
Synthesis of polyethers from epoxides via a binary organocatalyst system
Ge-Ge Gu, Li-Yang Wang, Rong Zhang, Tian-Jun Yue, Bai-Hao Ren, Wei-Min Ren
DOI: 10.1039/D1PY01085A
Development of a fully bio-based hyperbranched benzoxazine
Wanan Cai, Zhicheng Wang, Zhaohui Shu, Wenbin Liu, Jun Wang, Jian Qiu
DOI: 10.1039/D1PY01451J
Bis(N-acylated imidazolin-2-imine) nickel catalyzed norbornene copolymerization with methyl acrylate
Hu Zhang, Ru Xiao, Zhengguo Cai
DOI: 10.1039/D0PY00857E
Imidazole based dual photo/thermal initiators for highly efficient radical polymerization under air with a metal-free approach‡
DOI: 10.1039/D1PY01079D
A highly hydrophilic cation exchange nonwoven with a further modifiable epoxy group prepared by radiation-induced graft polymerization
Xiao-han Pan, Jian-hua Zu
DOI: 10.1039/D1PY00866H
Hydrogen-bonding mediated self-assembly of amphiphilic ABA triblock copolymers into well-defined giant vesicles
Huiying Wang, Qiang Chen, Zhen Geng, Jingyi Rao, Bijin Xiong, Frédéric Lortie, Julien Bernard, Wolfgang H. Binder, Senbin Chen, Jintao Zhu
DOI: 10.1039/D1PY01061A
You might also like
What is the market or research trend for N-(4-Methoxybenzyl)-2-pyridinamine (CAS: 52818-63-0)?
N-(4-Methoxybenzyl)-2-pyridinamine (CAS: 52818-63-0) is increasingly being used ...
What precautions should be taken when handling Ethyl 4-(2-chlorophenyl)-1,3-thiazole-2-carboxylate (CAS: 1050507-06-6)?
When handling Ethyl 4-(2-chlorophenyl)-1,3-thiazole-2-carboxylate, appropriate p...
What regulatory guidelines apply to diethyldiselane (CAS: 628-39-7)?
Diethyldiselane (CAS: 628-39-7) is classified under the Globally Harmonized Syst...
What is the market or research trend for oxocopper (CAS: 12053-18-8)?
The market for oxocopper (CAS: 12053-18-8) is primarily driven by its use in cat...
What is the market or research trend for 5-{[(2-Methyl-2-propanyl)oxy]carbonyl}-5-azaspiro[2.4]heptane-7-carboxylic acid?
The market for 5-{[(2-Methyl-2-propanyl)oxy]carbonyl}-5-azaspiro[2.4]heptane-7-c...
What is 2-(1-Pyrrolidinyl)-4-pyridinamine (CAS: 35981-63-6)?
2-(1-Pyrrolidinyl)-4-pyridinamine is a chemical compound with the CAS number 359...
What are the physical and chemical properties of 2-(3-Pyridinyl)-1-azabicyclo[2.2.2]octane (CAS: 91556-75-1)?
2-(3-Pyridinyl)-1-azabicyclo[2.2.2]octane (CAS: 91556-75-1) is a crystalline sol...
How is (S)-Alpha-allyl-proline hydrochloride (CAS: 129704-91-2) typically synthesized?
(S)-Alpha-allyl-proline hydrochloride is usually synthesized via a Wittig reacti...
What is 3-Methyl-1,2-oxazole-5-carboxylic acid (CAS: 4857-42-5)?
3-Methyl-1,2-oxazole-5-carboxylic acid (CAS: 4857-42-5) is an organic compound w...
How is Lys-SMCC-DM1 (CAS: 1281816-04-3) typically synthesized?
Lys-SMCC-DM1 is synthesized via a multi-step process involving the coupling of S...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![5'-Fluoro-[2,3'-biindolinylidene]-2',3-dione structure 5'-Fluoro-[2,3'-biindolinylidene]-2',3-dione structure](https://static.chemtradehub.com/structs/251/251903-00-1-9cb1.webp)

![N-{15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl}-2-(2-propyn-1-yloxy)acetamide structure N-{15-[(2,5-Dioxo-1-pyrrolidinyl)oxy]-15-oxo-3,6,9,12-tetraoxapentadec-1-yl}-2-(2-propyn-1-yloxy)acetamide structure](https://static.chemtradehub.com/structs/210/2101206-92-0-2eb5.webp)

