通过将羟基封端的聚丁二烯与纳米二氧化硅接枝 来改善 PET 复合材料的氧气阻隔性能 摘要 通过两个步骤将羟基封端的聚丁二烯(HTPB)接枝到纳米二氧化硅上,然后与 PET 和过渡金属催化剂一同熔融挤出.傅立 叶变换红外光谱(FTIR)和热重分析(TGA)结果显示 HTPB 通过甲苯 2,4-二异氰酸酯(TDI)成功地接枝到了纳米二氧化硅表...
6. It can be observed that in the enzymatic reaction residue containing 20% Bet-Sor (1:2), the types of hydrolysis products are the same as those in the buffer solution, that is, the peaks of both TPA and MHET appear, and there is no peak of BHET product. This indicates that the ...
PET热历史晶体结构动态结构利用wAXD,DSC和FTIR等方法研究了PET在升温过程中的晶体结构变化.X射线衍射分析表明:在升温过程中,双轴拉伸薄膜只有100晶面衍射峰,等温结晶和自然冷却样品有110和100两个晶面衍射峰,而淬火样品无衍射峰.淬火后加热再自然冷却样品有010,110和100三个晶面衍射峰.在DSC曲线中淬火样品有冷结晶峰,...
After the addition of NaCl, reduction peaks appeared at higher temperatures of 274 and 299 °C, revealing a stronger interaction between Cu particles and the support. H2-TPR revealed that this dense structure was relatively difficult to reduce. The decreased CO adsorption on FTIR spectra at ...
Figure S3. Temperature dependence of the three amide I components of Pet FTIR spectra. Light blue, dark blue, and red colors indicate components located at 1639-1634 cm-1, 1630-1624 cm-1, and 1624-1615 cm-1, respectively. Figure S4. Modeled conformational changes for Pet to shift to a ...
The appearance of Al 2p, Al 2s, and O 1s peaks at the binding energies of 74eV, 119eV, and 531eV, respectively, in the X-ray photoelectron spectroscopy (XPS) analysis confirms the fabrication of Al2O3 films, which is also supported by Fourier transform infrared spectroscopy (FTIR). The...
Infrared (FTIR) spectroscopy can be a very powerful tool for studying chemical structure in bulk materials as well as providing molecular conformation details that are inaccessible to most analytical methods. Thus, we used the FTIR technique to measure the crystalline and amorphous content in PET, ...
and O 1s peaks at the binding energies of 74 eV, 119 eV, and 531 eV, respectively, in the X-ray photoelectron spectroscopy (XPS) analysis confirms the fabrication of Al2O3 films, which is also supported by Fourier transform infrared spectroscopy (FTIR). The films show excellent insu...
Figure 3 shows that there are two distinct peaks in the 1100–1700 cm−1 range, the D peak of DLC films at 1360 cm−1, and the G peak of DLC films at 1615 cm−1. The areas of D and G peak in the Raman spectrum are corresponding to peak intensity ID and IG, ...
thermal bonding processdwell timemold materialsThe effects of the thermal bonding temperature, dwell time, and the type of mold materials on the thermal oxidative degradation of the PP sheath of bicomponent fibers were investigated using the Fourier Transform Infrared Spectra (FTIR) and Thermal ...