tailieunhanh - Study on change of color and some properties of high density polyethylene/organo-modified calcium carbonate composites exposed naturally at Dong Hoi - Quang Binh

This paper presents the study on the UV-Vis spectra, change of color and some properties of high density polyethylene/organo-modified calcium carbonate (HDPE/m-CaCO3) composites exposed naturally in Dong Hoi district, Quang Binh province (Vietnam). From June 2014 to June 2016, the samples of HDPE/m-CaCO3 composites were tested naturally on outdoor shelves at Dong Hoi sea atmosphere region (at Dong Hoi, Quang Binh). The change of UVVIS spectra, color and some properties of the HDPE/m-CaCO3 composites depend on geographic, weather and climatic factors (solar radiation, temperature, humidity, etc.). | Vietnam Journal of Chemistry, International Edition, 55(4): 417-423, 2017 DOI: Study on change of color and some properties of high density polyethylene/organo-modified calcium carbonate composites exposed naturally at Dong Hoi - Quang Binh Le Duc Minh1, Nguyen Thuy Chinh2, Nguyen Vu Giang2, Tong Cam Le1, Dau Thi Kim Quyen1, Le Duc Giang3, Thai Hoang2* 1 Faculty of Pedagogy Natural Sciences, Ha Tinh University, 447 26/3 street, Ha Tinh, Vietnam 2 Institute for Tropical Technology, Vietnam Academy of Science and Technology 3 Faculty of Chemistry, Vinh University Received 22 January 2017; Accepted for publication 28 August 2017 Abstract This paper presents the study on the UV-Vis spectra, change of color and some properties of high density polyethylene/organo-modified calcium carbonate (HDPE/m-CaCO3) composites exposed naturally in Dong Hoi district, Quang Binh province (Vietnam). From June 2014 to June 2016, the samples of HDPE/m-CaCO3 composites were tested naturally on outdoor shelves at Dong Hoi sea atmosphere region (at Dong Hoi, Quang Binh). The change of UVVIS spectra, color and some properties of the HDPE/m-CaCO3 composites depend on geographic, weather and climatic factors (solar radiation, temperature, humidity, etc.). In the UV-VIS spectra, the band at 265 nm showed the formation of the carbonyl groups such as ketone, lactone carbonyl and aliphatic ester which were occurred in photo-degradation process of HDPE/m-CaCO3 composites. The results of color change indicated the surface of the samples of HDPE/mCaCO3 composites was lightened continuously with increasing natural exposure time and increased in total color difference value and significant loss in both redness and yellowness. a*, b* values and electrical breakdown of HDPE/m-CaCO3 composites were decreased while their l*, E, dielectric constant and dielectric loss were increased with rising natural exposure time. Dielectric constant of HDPE/m-CaCO3 composites was in .

• Hoá học
• Vietnam Journal of Chemistry
• Study on change of color
• High density polyethylene organo modified calcium carbonate composites exposed naturally
• Dong Hoi Quang Binh
• Modified calcium carbonate
• Membrane processes and their potential applications
• Fresh water provision in Vietnam
• Mature and emerging membrane processes destined
• Pressure driven filtration
• Anticaries activity of mangiferin
• Mangifera indica leaves in Vietnam
• Vietnamese Mangifera indica leaves
• Acid production and biofilm formation
• Mangiferin possesses moderate anticaries activity against
• Screening for the main triterpenic acids
• Centella asiatica samples
• North and South of Vietnam
• The main triterpenic acids
• Both triterpenic acids
• Nanosilica chitosan hybrid on leaf blast
• Blight diseases of rice in Vietnam
• Particularly for rice
• The leaf blast disease index
• Fissistigma oldhamii
• Growing in Vietnam
• Influence of operating conditions and membrane fouling
• Water flux during seawater desalination
• Air gap membrane distillation
• Seawater AGMD desalination
• Remote communities in Vietnam
• Vietnam journal of earth sciences
• Fluid characteristics from shallow magmatic environments
• Contribution to danburite bearing Luc Yen pegmatites
• Shallow magmatic environments
• Fluid inclusions show the same chemistry
• Journal of Chemistry
• Further chemical constituents
• Scoparia dulcis L
• Scrophulariaceae originating
• The MeOH extract
• Synthesis and electrochemical performance of MoO2 graphene nanomaterials
• Synthesis and electrochemical performance
• Anode for lithium ion battery
• Molybdenum dioxide graphene composites
• Indicated graphene composition
• Phytochemical and cytotoxic investigations
• The lichen Stereocaulon evolutum Graewe
• Algal cyanobacterial symbioses
• Searching cytotoxic compound
• Preparation of some new benzo[d]thiazole derivatives
• New benzo[d]thiazole derivatives
• Both phenolic hydroxyl group
• Mass spectral analyses
• Quantum chemical computation insight
• The donor acceptor bond interaction
• Silver complexes with tetrylene
• N heterocyclic tetrylene
• Bond dissociation energy
• Quantum chemical calculations
• 5 fluorouracil encapsulated CS mPEG nanogels
• Controlling drug release
• Characterize poly methyl ether
• Fourier transform infrared
• Proton nuclear magnetic resonance
• Preparation and characterization of nanosilica from rice husk ash
• Chemical treatment combined with calcination
• Rice husk ash
• X ray diffraction
• X ray spectroscopy
• Large scale fabrication
• Colloidal nano sized CuCl solution
• High concentration for using as fungicide for plant
• Fungicide for plant
• The effect of combustion temperature
• Low tar gas production
• Oxygen enriched air
• The producer gas
• The lower heating value
• Degradation of tartrazine dye from aqueous solution
• Heterogeneous fenton like reaction
• Fe2O3 SiO2 composite
• Scanning electron microscopy
• Thermokinetic study of the isomerization of isocyanic acid
• The isomerization of isocyanic acid
• Kinetics and thermochemistry
• Rice Ramsperger KasselMarcus
• Synthesis of new hemiasterlin derivatives
• α
• β unsaturated carbonyl thiophene groups in fragment A
• New hemiasterlin derivatives
• The high reactivity
• Mg Al MoO4 layered double hydroxides
• Catalysts for the oxidation of styrene
• The oxidation of styrene
• The synthesized solids showed the layered hydroxide structure
• Two cycloartanes type triterpenoid from Homonoia riparia Lour
• Two cycloartanes type triterpenoid
• Homonoia riparia Lour
• Various chromatography methods
• Study on adsorption of phosphate from aqueous solution
• Phosphate from aqueous solution by nanomaterial CeO2
• X ray diffraction
• Chemical constituents and their biological activity of Pinus dalatensis
• Terpenoids from the leaves
• Acute myeloid leukemia
• The basic of spectroscopic methods
• Effect of chromium substituted
• Structural and magnetic characterization lithium ferrite nanoparticles
• Small degree of site interchange
• The tetrahedral sites