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Jurnal Institusi
Influence of Solvothermal Temperatures and Times on Crystallinity and Morphology of MOF-5
Indonesian Journal of Chemistry; Vol 15, No 2 (2015); 101-107
MOF-5 (metal-organic frameworks-5) have been synthesized using solvothermal method in which reaction mixtures of zinc nitrate hexahydrate and 1,4-benzenedicarboxylic acid (BDC) in dimethylformamide (DMF) were heated at various heating temperatures an...
Jurnal Institusi
Synthesis of Zeolite-X Supported On Glasswool for CO2 Capture Material: Variation of Immersion Time and NaOH Concentration at Glasswool Activation
Indonesian Journal of Chemistry; Vol 16, No 1 (2016); 1-7
Zeolite X supported on fiber material (glasswool) was successfully synthesized using a simple hydrothermal method. Variation of immersion time and NaOH concentration were used for glasswool activation. Activation process of glasswool has effects towa...
Jurnal Institusi
Oxidation of Cyclohexane to Cylohexanol and Cyclohexanone Over H4[a-SiW12O40]/TiO2 Catalyst
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 175-180
Oxidation of cyclohexane to cyclohexanol and cyclohexanone was carried out using H4[a-SiW12O40]/TiO2 as catalyst. In the first experiment, catalyst H4[a-SiW12O40]/TiO2 was synthesized and characterized using FTIR spectroscopy and X-Ray analysis. In t...
Jurnal Institusi
Direct Synthesis of Methanol by Partial Oxidation of Methane with Oxygen over Cobalt Modified Mesoporous H-ZSM-5 Catalyst
Indonesian Journal of Chemistry; Vol 15, No 3 (2015); 263-268
Partial oxidation of methane over mesoporous catalyst cobalt modified H-ZSM-5 has been carried out. Mesoporous Na-ZSM-5 (Si/Al = 35.4) was successfully synthesized using double template method which has high surface area (450 m2/g) and average pore d...
Jurnal Institusi
Utilization of Cellulose from Pineapple Leaf Fibers as Nanofiller in Polyvinyl Alcohol-Based Film
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 181-189
Cellulose from pineapple leaf fibers as one of the natural polymer which has biodegradable property in a nanometer’s scale, can be formed as a filler in composite of Poly(vinyl) Alcohol/PVA is expected to increase the physical, thermal, and barrier...
Jurnal Institusi
Influences of Temperature on the Conversion of Ammonium Tungstate Pentahydrate to Tungsten Oxide Particles with Controllable Sizes, Crystallinities, and Physical Properties
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 124-129
The purpose of this study was to investigate influences of temperature on the conversion of ammonium tungstate pentahydrate (ATP) powder to tungsten trioxide (WO3) particles with controllable sizes, crystallinities, and physicochemical properties. In...
PubMed
Permanently open stomata of aquatic angiosperms display modified cellulose crystallinity patterns
Plant Signal Behav
Most floating aquatic plants have stomata on their upper leaf surfaces, and usually their stomata are permanently open. We previously identified 3 distinct crystallinity patterns in stomatal cell walls, with angiosperm kidney-shaped stomata having th...
PubMed
Integrated VIS/NIR Spectrum and Genome-Wide Association Study for Genetic Dissection of Cellulose Crystallinity in Wheat Stems
Int J Mol Sci
Cellulose crystallinity is a crucial factor influencing stem strength and, consequently, wheat lodging. However, the genetic dissection of cellulose crystallinity is less reported due to the difficulty of its measurement. In this study, VIS/NIR spect...
PubMed
Lattice-Cluster-Theory-Informed Cross-Fractionation Chromatography Revealing Degree of Crystallinity of Single Macromolecular Species
ACS Macro Lett
[Image: see text] The relationship between macromolecular architecture and crystallization properties is a relevant research topic in polymer science and technology. The average degree of crystallinity of disperse polymers is a well-studied quantity ...
PubMed
High-performance pan-tactic polythioesters with intrinsic crystallinity and chemical recyclability
Sci Adv
Three types of seemingly unyielding trade-offs have continued to challenge the rational design for circular polymers with both high chemical recyclability and high-performance properties: depolymerizability/performance, crystallinity/ductility, and s...
PubMed
A method to quantify crystallinity in amorphous metal alloys: A differential scanning calorimetry study
PLoS One
We developed and describe a differential scanning calorimetry method for calculating the initial crystallinity, change of crystallinity and crystallinity percentage of amorphous metal alloys as a function of temperature. Using thermodynamic enthalpie...
PubMed
Evaluating models for polycaprolactone crystallization via simultaneous rheology and Raman spectroscopy
J Rheol (N Y N Y)
The crystallization of a polymer melt is characterized by dramatic structural and mechanical changes that significantly impact the processing conditions used to generate industrially-relevant products. Relationships between crystallinity and rheology...
PubMed
Designing Smartly: Understanding the Crystallinity of Melt Electrowritten Scaffolds
Eng Life Sci
Melt Electrowriting (MEW) is a powerful technique in tissue engineering, enabling the precise fabrication of scaffolds with complex geometries. One of the most important parameters of MEW is collector speed, which has been extensively studied in rela...
PubMed
Comparative evaluation of the degree of indomethacin crystallinity by chemoinfometrical fourie-transformed near-infrared spectroscopy and conventional powder X-ray diffractiometry
AAPS PharmSci
A chemoinfometrical method for evaluating the degree of crystallinity based on fourie-transformed near-infrared (FT-NIR) spectroscopy was established and compared with the conventional powder X-ray diffraction method. Powder X-ray diffraction profile...
PubMed
Crystallinity assessment of anthropogenic calcites using Raman micro-spectroscopy
Sci Rep
Anthropogenic calcite is a form of calcium carbonate produced through pyrotechnological activities, and it is the main component of materials such as lime binders and wood ash. This type of calcite is characterized by a significantly lower degree of ...
PubMed
Controlling Fine Touch Sensations with Polymer Tacticity and Crystallinity
Soft Matter
The friction generated between a finger and an object forms the mechanical stimuli behind fine touch perception. To control friction, and therefore tactile perception, current haptic devices typically rely on physical features like bumps or pins, but...
PubMed
A universal curve of apatite crystallinity for the assessment of bone integrity and preservation
Sci Rep
The reliable determination of bioapatite crystallinity is of great practical interest, as a proxy to the physico-chemical and microstructural properties, and ultimately, to the integrity of bone materials. Bioapatite crystallinity is used to diagnose...
PubMed
Crystallinity of covalent organic frameworks controls immune responses
Nat Commun
Biomaterials can act as pro- or anti-inflammatory agents. However, effects of biomaterials crystallinity on immune responses are poorly understood. We demonstrate that the adjuvant-like behaviour of covalent organic framework (COF) biomaterial is dep...
PubMed
The prediction of the effects of non-isothermal molding/reprocessing on the crystallinity and mechanical properties of PEEK and CF/PEEK
Sci Rep
The crystallisation behaviour of carbon fiber reinforced polyetheretherketone composite (CF/PEEK) is affected by temperature changes during moulding and reprocessing, which ultimately affects their mechanical properties. Current studies do not consid...
PubMed
Influence of Hydroxypropyl Methylcellulose on Metronidazole Crystallinity in Spray-Congealed Polyethylene Glycol Microparticles and Its Impact with Various Additives on Metronidazole Release
AAPS PharmSciTech
The purpose of this study was to investigate the effect of a hydrophilic polymer, hydroxypropyl methylcellulose (HPMC), on the crystallinity and drug release of metronidazole (MNZ) in spray-congealed polyethylene glycol (PEG) microparticles and to fu...