The aim of this study was to improve the toughness of recycled poly(ethylene terephthalate) (PET)/ glass fiber (GF) blends through the addition of ethylenebutyl acrylate-glycidyl methacrylate copolymer (EBAGMA) and maleic anhydride grafted polyethylene-octene (POEg-MAH) individually. The morphology and mechanical properties of the ternary blend were also examined in this study. EBAGMA was more effective in toughening recycled PET/GF blends than POE-g-MAH; this resulted from its better compatibility with PET and stronger fiber/matrix bonding, as indicated by scanning electron microscopy images. The PET/GF/EBAGMA ternary blend had improved impact strength and well-balanced mechanical properties at a loading of 8 wt % EBAGMA.The addition of POE-g-MAH weakened the fiber/matrix bonding due to more POE-g-MAH coated on the GF, which led to weakened impact strength, tensile strength, and flexural modulus. According to dynamic rheometer testing, the use of both EBAGMA and POE-g-MAH remarkably increased the melt storage modulus and dynamic viscosity. Differential scanning calorimetry analysis showed that the addition of EBAGMA lowered the crystallization rate of the PET/GF blend, whereas POE-g-MAH increased it.

Driven by π–π and CH−π interactions, coordination polymer-based crystals (Cu­(II)-CPCs) were formed from 1D aggregated copper­(II) complexes. Interestingly, these Cu­(II)-CPCs crystals exhibit distinctively differential fluorescence properties in response to various types of anions. More interestingly, it was found that anion exchange occurring on the Cu­(II)-CPC surface alone was sufficient to promote drastic and near-maximum modulation of their fluorescence properties. Extensive data from the nonlinear fluorescence analysis, ion exchange transmission electron microscopy (TEM) element mapping, analysis of anions by ion chromatography, and X-ray photoelectron spectroscopy (XPS) confirmed the surface structure to be the main factor that controls the fluorescence response of Cu­(II)-CPCs.