Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks

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Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks. / van Bochove, Bas; Spoljaric, Steve; Seppälä, Jukka; Sotta, Paul; Rios de Anda, Agustin.

In: ACS Applied Polymer Materials, Vol. 1, No. 7, 01.07.2019, p. 1811-1820.

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@article{13591417ba8f45928c072db0fb9aad20,
title = "Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks",
abstract = "Poly(trimethylene carbonate) (PTMC) polymeric networks are biocompatible materials with potential biomedical applications. By controlling the chemical synthesis, their functional macroscopic properties can be tailored. In this regard, this work presents the coupling of two experimental techniques, dynamic mechanical analysis (DMA) and solid-state nuclear magnetic resonance (NMR), as an innovative, robust, and straightforward approach to fully characterize the inner structure and its relationship with the macroscopic properties of these PTMC materials. The studied photocured networks had an increasing macromer molecular weight M̅n, varying from 3 to 40 kg/mol, which permitted us to assess the variation of thermomechanical properties and the NMR signal decay with this parameter. DMA results showed that the thermomechanical behavior of the PTMC networks depends on the network’s M̅n. Indeed, the elastic modulus E′ and the main α relaxationtemperature Tα decrease with PTMC’s M̅n. Moreover, multiple-quanta solid-state 1H NMR investigations demonstrated that the network’s cross-link density is also linked to this chemical parameter. Interestingly, both techniques showed for the 40 kg/mol PTMC a neat difference of the effect of the chemical cross-links and the physical entanglements on the material’s network structure and thermomechanical behavior. Specifically, two different molecular relaxation domains were highlighted, which are not observed for the rest of the studied materials. By utilizing DMA and solid-state NMR in a complementary and synergetic manner, this work provides a novel and robust approach to determining and better understanding key structure−property relationships, specifically the inner structure and macroscopic properties, of such functional polymers.",
author = "{van Bochove}, Bas and Steve Spoljaric and Jukka Sepp{\"a}l{\"a} and Paul Sotta and {Rios de Anda}, Agustin",
year = "2019",
month = "7",
day = "1",
doi = "10.1021/acsapm.9b00338",
language = "English",
volume = "1",
pages = "1811--1820",
journal = "ACS Applied Polymer Materials",
issn = "2637-6105",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "7",

}

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TY - JOUR

T1 - Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networks

AU - van Bochove, Bas

AU - Spoljaric, Steve

AU - Seppälä, Jukka

AU - Sotta, Paul

AU - Rios de Anda, Agustin

PY - 2019/7/1

Y1 - 2019/7/1

N2 - Poly(trimethylene carbonate) (PTMC) polymeric networks are biocompatible materials with potential biomedical applications. By controlling the chemical synthesis, their functional macroscopic properties can be tailored. In this regard, this work presents the coupling of two experimental techniques, dynamic mechanical analysis (DMA) and solid-state nuclear magnetic resonance (NMR), as an innovative, robust, and straightforward approach to fully characterize the inner structure and its relationship with the macroscopic properties of these PTMC materials. The studied photocured networks had an increasing macromer molecular weight M̅n, varying from 3 to 40 kg/mol, which permitted us to assess the variation of thermomechanical properties and the NMR signal decay with this parameter. DMA results showed that the thermomechanical behavior of the PTMC networks depends on the network’s M̅n. Indeed, the elastic modulus E′ and the main α relaxationtemperature Tα decrease with PTMC’s M̅n. Moreover, multiple-quanta solid-state 1H NMR investigations demonstrated that the network’s cross-link density is also linked to this chemical parameter. Interestingly, both techniques showed for the 40 kg/mol PTMC a neat difference of the effect of the chemical cross-links and the physical entanglements on the material’s network structure and thermomechanical behavior. Specifically, two different molecular relaxation domains were highlighted, which are not observed for the rest of the studied materials. By utilizing DMA and solid-state NMR in a complementary and synergetic manner, this work provides a novel and robust approach to determining and better understanding key structure−property relationships, specifically the inner structure and macroscopic properties, of such functional polymers.

AB - Poly(trimethylene carbonate) (PTMC) polymeric networks are biocompatible materials with potential biomedical applications. By controlling the chemical synthesis, their functional macroscopic properties can be tailored. In this regard, this work presents the coupling of two experimental techniques, dynamic mechanical analysis (DMA) and solid-state nuclear magnetic resonance (NMR), as an innovative, robust, and straightforward approach to fully characterize the inner structure and its relationship with the macroscopic properties of these PTMC materials. The studied photocured networks had an increasing macromer molecular weight M̅n, varying from 3 to 40 kg/mol, which permitted us to assess the variation of thermomechanical properties and the NMR signal decay with this parameter. DMA results showed that the thermomechanical behavior of the PTMC networks depends on the network’s M̅n. Indeed, the elastic modulus E′ and the main α relaxationtemperature Tα decrease with PTMC’s M̅n. Moreover, multiple-quanta solid-state 1H NMR investigations demonstrated that the network’s cross-link density is also linked to this chemical parameter. Interestingly, both techniques showed for the 40 kg/mol PTMC a neat difference of the effect of the chemical cross-links and the physical entanglements on the material’s network structure and thermomechanical behavior. Specifically, two different molecular relaxation domains were highlighted, which are not observed for the rest of the studied materials. By utilizing DMA and solid-state NMR in a complementary and synergetic manner, this work provides a novel and robust approach to determining and better understanding key structure−property relationships, specifically the inner structure and macroscopic properties, of such functional polymers.

U2 - 10.1021/acsapm.9b00338

DO - 10.1021/acsapm.9b00338

M3 - Article

VL - 1

SP - 1811

EP - 1820

JO - ACS Applied Polymer Materials

JF - ACS Applied Polymer Materials

SN - 2637-6105

IS - 7

ER -

ID: 34576033