نتایج جستجو برای: spherulite

تعداد نتایج: 167  

2003
Jian Yang Yuqing Wan Chifeng Tu Qing Cai Jianzhong Bei Shenguo Wang

In this study, the macroporous poly(L-lactide) (PLLA) cell scaffold was modified for enhancing its cell affinity by an improved surface-treating medium, a mixture of aqueous 0.25 M NaOH/ethanol. Ethanol was applied as a co-treating medium to wet the polylactone and assist the hydroxide nucleophilic attack on the ester bond. Low concentration of NaOH could be applied, severe bulk degradation cou...

Journal: :Materials Chemistry and Physics 2021

Microporous polypropylene (PP) nanocomposite membranes suitable for various applications such as energy storage, water purification, membrane separation, etc., were prepared by melt mixing of and natural rubber (NR) subsequently followed etching phase. Nanoparticles having spherical shape (Al2O3), irregular (TiO2), 2D platelet morphology (Cloisite 30 B (C–30 B)), used to the influence nanoparti...

Journal: :Journal of composites science 2022

We created a coke-repellent inner surface in stainless steel (SS-321) tube using an enhanced chemical etching tactic. A water-borne solution was formulated by combining ion sequestering ligand (L), hydrogen peroxide (H), hydrochloric acid (C), and stabilizing agent (E or N). Three etchants, LHC, LHC-E, LHC-N, were therefore formulated, respectively. The metal surfaces achieved these etchants al...

Journal: :Polymer International 2022

Polyhydroxybutyrate (PHB) is a sustainable polymer that promising candidate for replacing petroleum-based plastics in food packaging. Fillers are used to improve the mechanical properties of PHB composites, simultaneously changing crystallinity matrix. However, it not well understood how fillers affect crystallisation and microstructure, thus resulting composite. This review summarises simulati...

Journal: :Applied Water Science 2022

Abstract Poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membrane was prepared by vapor and non-solvent-induced phase separation (VNIPS) process, the relationships between preparation conditions, behaviors structures were discussed. The diagram generated cloud point titration, effects of environmental relative humidity, air exposure time casting solution temperature on structure performan...

Journal: :Journal of Membrane Science 2021

Abstract Polyvinylidene fluoride (PVDF) hollow fiber membranes were developed by the thermally induced phase separation (TIPS) process using a triple-orifice spinneret with solvent co-extrusion at outermost channel for applications in membrane distillation (MD). The polymer surface concentration during preparation was controlled exploiting interfacial interactions of diluent and extruded surfac...

Journal: :Archaeological and Anthropological Sciences 2023

Abstract Near Eastern monumental buildings once hosted institutions with a variety of economic and environmental footprints. In this article examining Middle Bronze Age II (seventeenth century BC) building complex at Zincirli, Turkey, we integrate bioarchaeological remains ceramic artifactual evidence to evaluate whether was specialized node in broader network centralized economy. Combining see...

Journal: :Coatings 2023

Hydroxyapatite (HA) coatings on metallic implants have been extensively used in orthopedic applications to improve tissue-implant interactions, enhance their biocompatibility, and functionality. However, the expensive synthetic HA is most widely bioceramic for implant coatings, leading high costs. Hence, this research explored potential of an inexpensive biogenic derived from fish scales FsHA/y...

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