Chức năng hóa bề mặt là một khái niệm mới dùng để chỉ sự tác động, thay đổi các tính chất Lý – Hóa có những đặc mà vật liệu ban đầu không thể được như: chống dính ướt, phản xạ, tránh lắng đọng chất, đóng băng.... Tuy nhiên, phương pháp chế tạo chức kể trên đòi hỏi kĩ thuật phức tạp, tốn kém, và mất nhiều thời gian. Nghiên cứu này sẽ trình bày đơn giản rẻ tiền sử dụng của đế Tôn cho ứng ướt bám ...

Capsular exopolymers (EPS) of the bacterium Pseudomonas sp. NCIMB 2021 are allowed to self-assemble on hydrophilic and hydrophobic gold surfaces. Tapping mode atomic force microscopy confirms the differences in the surface topography between EPS adsorbed on both surfaces. Fourier-transform IR spectroscopy indicates that the EPS surface coverage is much greater on the hydrophobic surface. Furthe...

Magnetic silica aerogel in hydrophobic and hydrophilic forms were used as support to immobilize Candida rugosa lipase by adsorption method. Response surface methodology (RSM) was employed to study the effects of the three most important immobilization parameters, namely enzyme/support ratio (0.3-0.5, w/w), immobilization time (60-120 min) and alcohol percentage (20-40, %v/v) on the specific act...

The main objective of this research is theoretical and experimental investigation of the surfaces modification of SU8, PDMS, SiO2 and Si by RF plasma treatment. Physical-chemical reactions at room temperature can be used for the modifications of the surfaces in plasma, by modifying the contact angle, superficial polymerization, or by creating hydrophilic and/or hydrophobic regions on the surfac...

The interaction between two associating hydrophobic particles has traditionally been explained in terms of the release of entropically frustrated hydration shell water molecules. However, this picture cannot account for the kinetics of hydrophobic association and is therefore not capable of providing a microscopic description of the hydrophobic interaction (HI). Here, Monte Carlo simulations of...

The principles obtained from studies on molecular chaperones have provided explanations for the assisted protein folding in vivo. However, the majority of proteins can fold without the assistance of the known molecular chaperones, and little attention has been paid to the potential chaperoning roles of other macromolecules. During protein biogenesis and folding, newly synthesized polypeptide ch...

In the present work, we have explored the use of the triphenylmethyl group, a commonly used protecting group for primary alcohols as a gelling structural component in the design of molecular gelators. We synthesized a small library of triphenylmethyl derivatives of simple primary alcohols and studied their gelation properties in different solvents. Gelation efficiency for some of the derivative...

background and aims. adhesive permeability is hindered by application of an additional layer of hydrophobic resin, which increases its concentration within the hydrophilic layer, reduces its affinity to water, and enhances its physical properties. the aim of the present study was to evaluate the effect of a hydrophobic layer on the microleakage of class v composite restorations using different ...

This report describes a novel way to generate a highly effective hydrophobic cement surface via a carbonation route using sodium stearate. Carbonation reaction was carried out at different temperatures to investigate the hydrophobicity and morphology of the calcium carbonate formed with this process. With increasing temperatures, the particles changed from irregular shapes to more uniform rod-l...