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【33 Polymer Degradation and Stability】 Synergistic effect of fumed silica with Ni2O3 on improving flame retardancy of poly(lactic acid)
A novel combined catalyst of fumed silica (SiO2) with Ni2O3 was demonstrated to be more efficient than SiO2 or Ni2O3 alone in enhancing the char yield of poly(lactic acid) (PLA) and improving its char layer structure, which greatly enhanced the flame retardancy of PLA. The results of field-emission scanning electron microscope, transmission electron microscope, X-ray diffraction, Fourier-transform...
http://www.polymer.cn//ss/gongjiang_hust/publicationsshow_13250.html |
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【13 Journal of Applied Polymer Science】 In situ chemically crosslinked chitosan membrane by adipic acid
Adipic acid, which is nontoxic, was used to dissolve chitosan. The chitosan/adipic acid solution was used to prepare chitosan membrane. After being heated at 80-100 °C, the membrane was in situ chemically crosslinked by adipic acid, as verified by Fourier transform infrared and wide‐angle X‐ray diffractometer analysis. The crosslinked membrane did not collapse even without treatment in alkaline...
http://www.polymer.cn//ss/gongjiang_hust/publicationsshow_13236.html |
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Effect of Hydrothermal Aging on Injection Molded Short Jute Fiber Reinforced Poly(Lactic Acid) (PLA) Composites
This work focused on the durability of short jute fiber reinforced poly(lactic acid) (PLA) composites in distilled water at different temperatures (23, 37.8 and 60 A degrees C). Morphological, thermal and mechanical properties (tensile, flexural, and impact) of jute/PLA composites were investigated before and after aging. Different from traditional synthetic fiber reinforced polymer composites, th...
http://www.polymer.cn//ss/taoyu/publicationsshow_13191.html |
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Water absorption and hygrothermal aging behavior of short ramie fiber-reinforced poly(lactic acid) composites
Short ramie/poly(lactic acid) (PLA) composites were prepared by using extrusion and injection moulding method. The water absorption and hygrothermal aging behaviors of ramie/PLA composites at 60 degrees C was analyzed. The water absorption and mechanical properties of the ramie/PLA composites with immersion time were reported and compared to those of neat PLA. Crystallinity and molecular weight of...
http://www.polymer.cn//ss/taoyu/publicationsshow_13190.html |
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[J. Polym. Sci., Part A: Polym. Chem.] Thermoresponsive polymeric nanoparticles based on poly(2‐oxazoline)s and tannic acid
Hydrogen bonding is widely present and plays a significant role in material science and supramolecular chemistry. This work reports a straightforward strategy for the preparation
of polymeric nanoparticles from neutral poly(2-oxazoline)s (POx) and tannic acid (TA) driven by their intermolecular hydrogen bonding. Dynamic light scattering (DLS) and scanning electron microscope (SEM) measurement...
http://www.polymer.cn//ss/zhang_ning/publicationsshow_12897.html |
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A Kind of Cotton-like Micro- and Nano- Poly (lactic acid) Nonwoven Fiber Fabricated by Centrifugal Melt-spinning for Tissue Engineering.
Biodegradable materials in the form of nonwoven fibers have attracted increasing attention for tissue engineering applications because they offer large surface areas and interconnected networks. In this study, cotton-like nonwoven poly(lactic acid) (PLA) fibers were successfully fabricated by centrifugal melt-spinning. The effects of centrifugal speed and secondary melt-spinning processing on t...
http://www.polymer.cn//ss/pbzhang/publicationsshow_12885.html |
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Supramolecular assemblies and molecular recognition of amphiphilic Schiff bases with barbituric acid in organized molecular films
Tifeng Jiao, Minghua Liu*. Supramolecular assemblies and molecular recognition of
amphiphilic Schiff bases with barbituric acid in organized molecular films. The Journal of Physical Chemistry B 2005, 109 (7), 2532-2539.
http://www.polymer.cn//ss/tifengjiao/publicationsshow_12823.html |
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Two-photon fluorescent probe for lysosome-targetable hypochlorous acid detection within living cells
The design of robust tools for hypochlorous acid (HClO) detection at subcellular level is highly desired for the better understanding of its biological function in cellular signaling pathways. Herein, we report the development of a two-photon fluorescent probe (TPFP) for lysosome-targetable HClO detection through the integration of a lysosome-targetable group (aminoethyl)morpholine, two-photon f...
http://www.polymer.cn//ss/zhangpeisheng/publicationsshow_12812.html |
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Combination of a bio-based polyphosphonate and modified graphene oxide toward superior flame retardant polylactic acid
The superior flame retardant polylactic acid (PLA) composites were prepared using the bio-based polyphosphonate (BPPT) and polyethyleneimine modified graphene oxide (MGO) as flame retardant at very low loading amounts. Within 2.4 wt% BPPT and 0.6 wt% MGO in the polymer matrix, the as-prepared PLA composites can pass UL94 V0 grade and achieve a LOI value of 36.0. The cone tests and TG-FTIR results ...
http://www.polymer.cn//ss/zpfang/publicationsshow_12649.html |
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Synthesis of phospholipidated β-cyclodextrin and its application for flame retardant polylactic acid with ammonium polyphosphate
In this study, phospholipidated b-cyclodextrin (PCD) was obtained by the condensation between b-cyclodextrin and phenyl phosphonic acid dichloride, which was characterized by Fourier transform infrared (FTIR) spectra, 1H-NMR, and thermogravimetric analysis (TGA). The thermal stability and flame retardancy of the poly(lactic acid) (PLA) blends [PLA–ammonium polyphosphate (APP)–PCD] were measured ...
http://www.polymer.cn//ss/zpfang/publicationsshow_12566.html |
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