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Polyethylene oxide
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This study aimed to design a nanocarrier system for the efficient delivery of poorly soluble drugs in cancer treatment. Nanogel systems were prepared from copolymers of Heparin and different Pluronics, in which the Hep-Plu conjugates were formed via disulfide bridges of cystamine molecules. The obtained Hep-Plu systems were proved and characterized using specific techniques including H-NMR, zeta potential, DLS and FT-IR.
8p
dianmotminh02
03-05-2024
2
1
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Part 1 book "Applied chemistry and chemical engineering (Vol 5 - Research methodologies in modern chemistry and applied science)" includes content: Adsorption of malachite green to silica hydrogel, fullerenes in the air oxidation environment, water vapor adsorption by zeolites, degradation and stabilization issues of polyethylene in open air applications, theoretical calculations on aza scorpiand systems, global water crisis, groundwater remediation and futuristic vision of environmental engineering techniques - A far reaching review.
179p
muasambanhan08
01-03-2024
6
0
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Trong nghiên cứu này tác giả đã sử dụng polyethylene oxide (PEO15) để đo thử nghiệm với thiết bị đo độ nhớt dãn thiết kế. Kết quả cho thấy thiết bị đo độ nhớt dãn thiết kế có thể mô tả định tính quá trình dãn và ước lượng được độ nhớt dãn của polyme.
7p
gaupanda011
10-01-2024
8
3
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In the present investigation, GNS have been prepared by an aqueous anodic exfoliation of pencil graphite in an acidic medium at different dc voltages (5 Ve12 V). The GNS prepared at optimum voltage were mixed with polyaniline (PANI) polymer and drop casted on an indium tin oxide (ITO)/Polyethylene terephthalate (PET) substrate to study the I-V characteristics and to measure the band gap of composites.
7p
viberbers
09-08-2023
4
3
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A polyaniline (PANi)-carbon quantum dots (CQDs) nanocomposite material with CQDs made from a PEG (polyethylene glycol and NaOH) source was synthesized. This unique synthesis technique was developed to overcome the setbacks of the PEG method by using UG (urea and glycine). PANi was synthesized by chemical oxidation in the presence of CQDs, which were prepared according to the two above-mentioned methods.
10p
viberbers
09-08-2023
9
5
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Trong nghiên cứu này, oxide sắt từ đã được tổng hợp bằng phương pháp thủy nhiệt sử dụng polyethylene glycol làm tác nhân khử. Oxide sắt từ điều chế được đặc trưng bằng phương pháp nhiễu xạ tia X, hiển vi điện tử quét (SEM) và đường cong bão hòa từ (VMS).
12p
viplato
05-04-2022
20
1
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High density polyethylene (HDPE) was compounded with thermally exfoliated graphene oxide (TEGO) by thermokinetic mixing in a short time. High shear rates during the compounding process provided high exfoliation and proper dispersion of graphene layers in the polymer matrix. Different TEGO/polymer ratios were used to get efficient melt mixing. Structural analysis by spectroscopic techniques confirmed the exfoliation of TEGO sheets and the coverage of their surfaces by HDPE chains.
10p
langthannam
29-12-2021
4
0
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Wound dressings are one of the most rapidly expanding areas in medical textiles. In recent years, a large number of functional wound dressing has been developed. The aims of these products are to speed up the wound healing process and to provide maximum comfort for patients. Today, the multidisciplinary studies are required to improve further existed wound dressings. The results of such research studies are also promised new hopes for the Turkish textile industry weakened by the global competition.
10p
langthannam
29-12-2021
8
0
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With the Persona® knee system a new polyethylene formulation incorporating vitamin-E which aims to reduce oxidation and maintain wear resistance was introduced. Although in-vitro studies have demonstrated positive efects of the vitamin-E antioxidants on UHMWPE, no retrieval study has looked at polyethylene damage of this system yet.
11p
vimackenziebezos
30-11-2021
7
1
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The effect of washing stabilized and unstabilized blown extruded films of low-density polyethylene (LDPE) used for greenhouse coverings naturally weathered in a sub-Saharan facility at Ghardaïa (Algeria) for 19 and 6 months, respectively, was studied. A comparison between unwashed and daily washed samples was done. The changes in the films’ properties were followed at regular intervals using various characterization methods (physicochemical and mechanical).
20p
tudichquannguyet
29-11-2021
13
1
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The aim of this research was to design an electrochemical immunosensor for determination of tumour necrosis factor receptor-associated protein-1(TRAP1) antigen, a heat shock protein linked to tumour necrosis factor. The indium-tin oxide covered polyethylene terephthalate (ITO-PET) electrode surface was cleaned and was prepared for the introduction of hydroxyl groups on its surface by using NH4 OH/H2 O2 /H2 O. As a silanization agent for covalent attachment of anti-TRAP1 on the surface of the ITO working electrode, 3-glycidoxypropyltrimethoxysilane (3-GOPS) was used.
11p
tudichquannguyet
29-11-2021
9
1
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Mục đích của nghiên của này là xây dựng công thức bào chế vi cầu Amoxiciỉin kết dính sinh học đề sử dụng trong điều trị viêm loét dạ dày tá tràng do Helicobacter pylori. Vi cầu Amoxicilin kết dính sinh học được bào chế theo phương pháp trao đổi ion cố định gel. Natri alginat, propyl hydroxy methyl cellulose K100M (HPMC K100M), polyethylene oxide 5.000.000 (PEO 5) và chitosan được sử dụng làm polyme kết dính.
6p
closefriend02
07-10-2021
27
3
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At present time the number of implantations of joint replacements as well as their revisions increases. Higher demands are required on the quality and longevity of implants. The aim of this work was to determine the degree of oxidative degradation and the amount of free/residual radicals in selected ultra-high molecular weight polyethylene (UHMWPE) components of the joint replacements and demonstrate that the measured values are closely connected with quality and lifetime of the polymer components.
8p
viannito2711
20-04-2021
13
1
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We characterized their shape and morphology using transmission electron microscopy (TEM), and confirmed their crystalline structure with X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) in combination with energy-dispersive X-ray spectroscopy (EDX) elemental mapping.
9p
tamynhan4
06-09-2020
11
1
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Proton-conducting polymer electrolyte films were prepared by dissolving NH4I salt in polyethylene oxide/methylcellulose (PEO/MC) blend polymers using the solution cast technique. The semi-crystalline nature of the sample was identified from the X-ray diffraction (XRD) pattern. The surface morphology on the electrical conductivity was analyzed by scanning electron microscopy (SEM).
9p
tamynhan4
06-09-2020
12
1
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This paper presents the effect of carrageenan (CG) on some characteristics and drug release of allopurinol in the presence of polyethylene oxide (PEO) as a dispersion aid agent. The samples were prepared in film shape by solution method, in which, the content of PEO was changed from 1 wt.% to 5 wt.% and the content of allopurinol was fixed at 10 wt.% in comparison with carrageenan weight. Fourier transforms infrared (FTIR) spectroscopy and Field emission scanning electron microscopy (FESEM) methods were used to evaluate interactions and morphology of CG/PEO/allopurinol films.
9p
nguyenminhlong19
22-04-2020
22
0
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In this work, polyethylene oxide (PEO) was used as a compatibilizer to improve compatibility of chitosan (CS) and alginate (AG) in CS/AG composites loading lovastatine (LS). The CS/AG/PEO/LS composites were prepared by solution method with the ratio of AG/CS and LS content fixed at 4/1 and 10 wt.% (in comparison with the total weight of CS and AG), respectively. The PEO content was changed 3, 5 and 10 wt.% as compared with AG+CS+LS weight.
7p
abcxyz123_02
03-03-2020
16
3
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Hydrodynamic cavitation is a technology for the conservation of soil and water and waste water treatment due to its simple reactor design and capacity in large‐ scale operation. When fluid’s local pressure reaches a level lower than the saturation vapour’s pressure at environment temperature, cavitation bubbles begin to grow and together with fluid flow are driven to the points with high pressure where they are quickly collapsed.
15p
cothumenhmong3
22-02-2020
24
1
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Polymers acting as both an electrolyte and a separator are of tremendous interest because of their many virtues, such as no leakage, flexible geometry, excellent safe performance, and good compatibility with electrodes, compared with their liquid counterparts.
11p
viminotaur2711
29-10-2019
11
1
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The thesis with the objective of researching to assess the biodegradability (including decomposition process and decomposition in soil environment) of polyethylene film containing additives promoting oxidation is Fe stearate salts (Fe). III), Co (II) and Mn (II).
27p
xacxuoc4321
11-07-2019
14
1
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