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通过静电纺丝和熔体挤出法加工（共）聚（2-恶唑啉）及其（共）聚物的后处理性能

Processing of (Co)Poly(2-oxazoline)s by Electrospinning and Extrusion from Melt and the Postprocessing Properties of the (Co)Polymers.

作者信息

Wałach Wojciech, Oleszko-Torbus Natalia, Utrata-Wesołek Alicja, Bochenek Marcelina, Kijeńska-Gawrońska Ewa, Górecka Żaneta, Święszkowski Wojciech, Dworak Andrzej

机构信息

Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland.

Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland.

出版信息

Polymers (Basel). 2020 Feb 2;12(2):295. doi: 10.3390/polym12020295.

DOI:10.3390/polym12020295
PMID:32024273
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077476/
Abstract

Poly(2-oxazoline) (POx) matrices in the form of non-woven fibrous mats and three-dimensional moulds were obtained by electrospinning and fused deposition modelling (FDM), respectively. To obtain these materials, poly(2-isopropyl-2-oxazoline) (PiPrOx) and gradient copolymers of 2-isopropyl- with 2-n-propyl-2-oxazoline (P(iPrOx-nPrOx)), with relatively low molar masses and low dispersity values, were processed. The conditions for the electrospinning of POx were optimised for both water and the organic solvent. Also, the FDM conditions for the fabrication of POx multi-layer moulds of cylindrical or cubical shape were optimised. The properties of the POx after electrospinning and extrusion from melt were determined. The molar mass of all (co)poly(2-oxazoline)s did not change after electrospinning. Also, FDM did not influence the molar masses of the (co)polymers; however, the long processing of the material caused degradation and an increase in molar mass dispersity. The thermal properties changed significantly after processing of POx what was monitored by increase in enthalpy of exo- and endothermic peaks in differential scanning calorimetry (DSC) curve. The influence of the processing conditions on the structure and properties of the final material were evaluated having in a mind their potential application as scaffolds.

摘要

分别通过静电纺丝和熔融沉积建模（FDM）获得了非织造纤维垫和三维模具形式的聚（2-恶唑啉）（POx）基质。为了获得这些材料，对具有相对低摩尔质量和低分散度值的聚（2-异丙基-2-恶唑啉）（PiPrOx）以及2-异丙基-2-恶唑啉与2-正丙基-2-恶唑啉的梯度共聚物（P（iPrOx-nPrOx））进行了加工。针对水和有机溶剂对POx的静电纺丝条件进行了优化。此外，还对制造圆柱形或立方体形状的POx多层模具的FDM条件进行了优化。测定了静电纺丝后以及从熔体挤出后的POx的性能。所有（共）聚（2-恶唑啉）的摩尔质量在静电纺丝后没有变化。同样，FDM也不影响（共）聚合物的摩尔质量；然而，材料的长时间加工导致降解以及摩尔质量分散度增加。通过差示扫描量热法（DSC）曲线中外热峰和内热峰焓的增加监测到，POx加工后热性能发生了显著变化。考虑到它们作为支架的潜在应用，评估了加工条件对最终材料结构和性能的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/cb37f0572427/polymers-12-00295-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/3487471e84e4/polymers-12-00295-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/856b8268fea4/polymers-12-00295-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/821e96bedd94/polymers-12-00295-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/bf77edb671e9/polymers-12-00295-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/b8e4015b55a4/polymers-12-00295-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/52a1ded3c29a/polymers-12-00295-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/8675574933ae/polymers-12-00295-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/d6594cbc79aa/polymers-12-00295-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/cb37f0572427/polymers-12-00295-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/3487471e84e4/polymers-12-00295-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/856b8268fea4/polymers-12-00295-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/821e96bedd94/polymers-12-00295-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/bf77edb671e9/polymers-12-00295-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/b8e4015b55a4/polymers-12-00295-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/52a1ded3c29a/polymers-12-00295-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/8675574933ae/polymers-12-00295-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/d6594cbc79aa/polymers-12-00295-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/afc4/7077476/cb37f0572427/polymers-12-00295-g009.jpg

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