Imine based covalent adaptable networks from diacetone acrylamide polymerization DOI

Hanghang Chen,

Z. L. Hou,

Liqiong Li

et al.

Published: Oct. 17, 2024

Abstract The construction of covalent adaptable networks (CANs) without the need for post-modification, complex monomer synthesis routes, or expensive materials is highly desirable practical application dynamic chemistry. In present study, commercially available acrylate monomer, diacetone acrylamide (DAAM), was initially polymerized using a traditional radical polymerization method. Subsequently, it cross-linked with amine agents under hot-processing conditions to form aliphatic imine-based CANs. resulting exhibited glass transition temperatures (Tg) in range 95 107°C, good thermal stability, mechanical and thermomechanical properties. All samples were amenable recycling. Post-recycling, both tensile strength Young's Modulus slight deterioration, retaining approximately 80% their original results from gel content analysis structural characterization pristine recycled indicate that observed reduction properties Tg (approximately 70°C) can be attributed decrease degree cross-linking release ketone groups. Furthermore, all demonstrated degradability acidic conditions, attributable imine structure. By this facile approach prepare acrylate-based CANs, we establish an important framework polymer are reprocessable biodegradable.

Language: Английский

Mechanically strong, reprocessable and chemically recyclable furan-based poly(acylhydrazone)s materials with hydrogen-bonding networks DOI
Xiaowei Li,

Chilong Liu,

Xiangchun Quan

et al.

European Polymer Journal, Journal Year: 2024, Volume and Issue: 221, P. 113584 - 113584

Published: Nov. 15, 2024

Language: Английский

Citations

1
Isosorbide-Based Acrylic Pressure-Sensitive Adhesives Through UV-Cured Crosslinking with a Balance Between Adhesion and Cohesion DOI Open Access

Jie Lv,

Qingjun Wang, Hongfeng Xie

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(22), P. 3178 - 3178

Published: Nov. 14, 2024

The development of sustainable pressure-sensitive adhesives (PSAs) from natural biomass resources has attracted increasing attention owing to their non-toxic, biocompatible, and biodegradable features. In this study, a bio-based acrylic PSA with tunable adhesion cohesion was synthesized by selective chemical modification isosorbide-5-acrylate (IA) its copolymerization butyl acrylate acid through UV-curing crosslinking. During the process, isosorbide diacrylate ester (IDAE) served as crosslinker, effectively improving crosslinking degree PSA. impact IA IDAE on mechanical properties studied. Moreover, achieve balance between cohesion, optimal composition identified. addition significantly enhances stiffness Furthermore, combined effect improves overall demonstrates peel force 13.9 N/25 mm persistent time 6820 min, promising replace traditional petroleum-based PSAs.

Language: Английский

Citations

1
Crosslinking through acyl hydrazone formation by reacting water soluble polyurethanes derived from ketone diol comonomers and those containing hydrazide pendant groups DOI
Roshan F. Dsouza, Anbanandam Parthiban

Progress in Organic Coatings, Journal Year: 2023, Volume and Issue: 186, P. 108065 - 108065

Published: Nov. 8, 2023

Language: Английский

Citations

3
Synthesis and properties of biomass‐based polymethacrylate comprising chitin‐derived 2‐acetamide‐2‐deoxyisosorbide as a repeat unit DOI
Yasuhito Koyama, Takuya Sagawa,

Kazufumi Kohno

et al.

Polymer International, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

Abstract Synthesis and applications of biobased polymers have been extensively studied in order to reduce the use petroleum‐based likewise environmental load. Several produced on a commercial large scale date. However, lineup high‐performance with transparency high glass transition temperature is inadequate their development critical issue. In this article, we design new polymethacrylate comprising rigid cis ‐fused bicyclic 2‐acetamide‐2‐deoxyisosorbide (ADI) as repeat unit. We recently invented catalytic transformation systems from chitin marine biomass ADI nitrogen‐containing platform chemical. The ADI‐based synthesized via free radical polymerization methacrylic acid ester initiated by (NH 4 ) 2 S O 8 N , ′, ′‐tetramethylethylenediamine dimethylsulfoxide–H mixed solvent. molecular weight its dispersity are estimated size exclusion chromatography basis polymethylmethacrylate standards. UV–visible spectroscopy demonstrates polymer visible wavelength region. Differential scanning calorimetry analysis clarifies remarkably temperature, compared that polymethylmethacrylate. thermal decomposition also evaluated thermogravimetric analysis. On favorable properties polymer, present study proposes it useful for real‐world applications. © 2024 Society Chemical Industry.

Language: Английский

Citations

0
Direct Restoration of Photocurable Cross-linkers for Repeated Light-based 3D Printing of Covalent Adaptable Networks DOI Creative Commons
Loc Tan Nguyen, Filip Du Prez

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Photocurable dynamic cross-linkers based on β-amino esters have been successfully synthesized. The direct restoration of such cross-linkers, enabled by a catalyst- and solvent-free protocol, is established for repeated DLP 3D printing.

Language: Английский

Citations

0
Imine based covalent adaptable networks from diacetone acrylamide polymerization DOI

Hanghang Chen,

Z. L. Hou,

Liqiong Li

et al.

Published: Oct. 17, 2024

Abstract The construction of covalent adaptable networks (CANs) without the need for post-modification, complex monomer synthesis routes, or expensive materials is highly desirable practical application dynamic chemistry. In present study, commercially available acrylate monomer, diacetone acrylamide (DAAM), was initially polymerized using a traditional radical polymerization method. Subsequently, it cross-linked with amine agents under hot-processing conditions to form aliphatic imine-based CANs. resulting exhibited glass transition temperatures (Tg) in range 95 107°C, good thermal stability, mechanical and thermomechanical properties. All samples were amenable recycling. Post-recycling, both tensile strength Young's Modulus slight deterioration, retaining approximately 80% their original results from gel content analysis structural characterization pristine recycled indicate that observed reduction properties Tg (approximately 70°C) can be attributed decrease degree cross-linking release ketone groups. Furthermore, all demonstrated degradability acidic conditions, attributable imine structure. By this facile approach prepare acrylate-based CANs, we establish an important framework polymer are reprocessable biodegradable.

Language: Английский

Citations

0