【摘 要】
：
Ultra-high molecular weight polyethylene (UHMWPE) with a microporous structure was prepared via thermally induced phase separation (TIPS).Liquid paraffin (LP) w
【机 构】
：
Department of Polymer Science and Engineering
论文部分内容阅读
Ultra-high molecular weight polyethylene (UHMWPE) with a microporous structure was prepared via thermally induced phase separation (TIPS).Liquid paraffin (LP) was used as a diluent in the preparation of microporous UHMWPE.Small angle laser light scattering (SALLS) and differential scanning calorimetry (DSC) were used to determine the phase separation temperatures,I.e.the cloud points and the dynamic crystallization temperatures,respectively.It was found that the cloud points were coincident with the crystallization temperatures,indicating that a solid-liquid phase separation occurred during thermal quenching of the UHMWPE/LP solution,while,no liquid-liquid phase separation above the crystallization temperature was observed.The effects of the content and the molecular weight of UHMWPE on the morphology and average pore size were investigated with field emission scanning electron microscopy (FE-SEM) and mercury porosimetry.With the increase of the content of UHMWPE,the average pore size of the microporous material decreased and the molecular weight of UHMWPE could also influence the pore size slightly.
其他文献
The title compounds (S)-methyl-2-(4-R-phenylsulfonamido)-3-(lH-indol-3-yl)propanoate (R = H (1), Cl (2)) have been synthesized and their crystal structures also
A series of nanofiltration (NF) membranes were prepared with poly(amido-amine) (PAMAM) and trimesoyl chloride (TMC) viu in situ interfacial polymerization.The e
The deprotection of 1,3-dibenzyl-5-(N,N-dimethylamino)-6-phenyl-ethyluracil I was investigated.A practical,regioselective N3 deprotection of compound I was perf
Two new neo-clerodane diterpenoids, 6,7-dibenzoyloxybarbatin C (1, named barbatin D) and 6-(2-acetoxy-3-methylbutanoloxy)-7-(2-carbonyl-3-methylbutanoyloxy) bar
The seaward slope of many breakwaters consists of thousands of interlocking units of rock or concrete comprising a massive granular system of large elements eac
We study electrically forced nonlinear thickness-shear vibrations of a quartz plate resonator with relatively large amplitude. It is shown that thickness-shear
Mixing behaviors of particles are simulated in a sheared granular flow using differently colored but otherwise identical glass spheres, with five different bott
To explore the functional mechanism of Resveratrol against colon cancer cells Is174t and the growth of colon cancer tissue of tumor-bearing mice,MTT method was
In this work, the capillary electrophoresis mobility shift assay (CEMSA) was first adopted to study the interaction of protein with quantum dots (QDs). In this
The N-NO2 bond dissociation energies (BDEs) for 7 energetic materials were computed by means of accurate density functional theory (B3LYP, B3PW91 and B3P86) wit