基于像素化虹彩对聚对二氧环己酮扇形带状球晶的微束X射线和扫描电子显微镜分析

Microbeam X-ray and Scanning Electron Microscopic Analyses on Sector-Banded Spherulites of Poly(p-dioxanone) Justified with Pixelated Iridescence.

作者信息

Woo Eamor M, Lin Chia-Hui, Nagarajan Selvaraj, Su Chean-Cheng

机构信息

Department of Chemical Engineering, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.

Department of Chemical and Materials Engineering, National University of Kaohsiung, No. 700, Kaohsiung University Rd., Nan-Tzu Dist., Kaohsiung 811, Taiwan.

出版信息

Polymers (Basel). 2024 Sep 27;16(19):2736. doi: 10.3390/polym16192736.

DOI:10.3390/polym16192736

PMID:39408447

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11478648/

Abstract

Poly(p-dioxanone) (PPDO) is crystallized with amorphous poly(p-vinyl phenol) (PVPh) and tannic acid (TA) as co-diluents to regulate and induce dendritic-ringed PPDO spherulites, with spoke- or sector-bands, aiming for convenience of analyses on interior lamellar assembly. Morphologies and interior lamellar arrangement leading to the peculiar rings on individual dendrites are evaluated by using polarized-light microscopy (PLM) and scanning electron microscope (SEM). Combinatory microbeam small-/wide-angle X-ray scattering (SAXS/WAXS) analyses further confirm the unique assembly patterns in periodic cycles. Alternate gratings are packed with periodic ridges composed of feather-like branches and the valley is featured with some embossed textures. The periodic gratings in the ringed spokes resemble those in nature's structured coloration and are proven to display light-interference iridescence.

摘要

聚对二氧环己酮（PPDO）与无定形聚对乙烯基苯酚（PVPh）和单宁酸（TA）作为共稀释剂结晶，以调节和诱导具有辐条或扇形带的树枝状环状PPDO球晶，目的是便于分析内部片晶组装。通过偏光显微镜（PLM）和扫描电子显微镜（SEM）评估导致单个树枝状晶体上出现特殊环的形态和内部片晶排列。组合微束小角/广角X射线散射（SAXS/WAXS）分析进一步证实了周期性循环中的独特组装模式。交替光栅由羽毛状分支组成的周期性脊填充，山谷具有一些压纹纹理。环状辐条中的周期性光栅类似于自然界中的结构色，并且被证明会显示光干涉虹彩。