Polymer synthesis

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用于细胞膜片组织工程的基于聚N-异丙基丙烯酰胺的智能表面

组织工程已成为治疗受损或患病的器官和组织（例如血管和尿囊）的关键治疗工具。

RAFT：选择合适的催化剂来实现可控聚合

查找可逆加成-断裂链转移(RAFT)工艺、RAFT剂和应用分类。

有机和有机无机杂化聚合物的分子层沉积

近十年来出现了原子层沉积（ALD）技术以满足各种需求，包括半导体器件小型化、多孔结构上的保形沉积和纳米颗粒涂层。ALD基于两个相继的自限性表面反应。

材料学中的聚合物分析

Sigma-Aldrich®的科学家通过1H NMR端基分析对Mn值低于3,000的聚合物进行常规测定数均分子量（Mn）。

均聚物的热转变：玻璃转变温度和熔点

对于较常见的均聚物，给出了玻璃转变温度（Tg）和熔融温度（Tm）的文献值。

高折射率和低折射率涂层材料

折射率（RI或n）对于光波导和眼科装置等光学应用非常重要。基于其独特的折射率特性和良好的光学透明度，聚合物材料还可用作太阳能电池、显示器和隐形眼镜的抗反射涂层。

聚合物-粘土纳米复合材料：多功能材料的设计与应用

材料科学研究的一大终极目标是开发出多功能材料。这些材料被定义为可为特定应用带来不止一种性能增强的组合物，从而可以替代改造对象中的一种以上的其他材料，或替代单独仅能应对一种终端使用需求的一整类材料。

纳米矿物：纳米粘土

纳米粘土是层状矿物硅酸盐的纳米颗粒。蒙脱土、膨润土、埃洛石纳米粘土和有机粘土用在聚合物粘土纳米复合材料中，作为流变改性剂和药物递送载体。

Smart Oligonucleotide Delivery by Multifunctional Block Copolymers

Kanjiro Miyata (The University of Tokyo, Japan) provides insights on the rational design of polymeric materials for “smart” oligonucleotide delivery.

Chemistry in (Bio)Materials Science

"Click" Chemistry in (Bio)Materials Science

Functional Biomaterials Synthesized by Double-Head Polymerization Agents

Over the past two decades, the rapid advance of controlled living polymerization (CLP) techniques.

RAFT: Choosing the Right Agent to Achieve Controlled Polymerization

Find reversible addition–fragmentation chain transfer(RAFT) polymerization process, classes of RAFT agents & applications.

Tools for PEGylation

Polyethylene glycol (PEG) reagents offer numerous favorable characteristics, including high water solubility, high mobility in solution, lack of toxicity and immunogenicity, and ready clearance from the body.

Functionalized PEI and Its Role in Gene Therapy

Gene therapy has become one of the most discussed techniques in biomedical research in recent years.

What Are Biomaterials?

Biocompatible / Biodegradable Polymer Tutorial

Polyethylene Glycol Building Blocks for PEGylation

Sigma-Aldrich.com presents an article regarding Polyethylene Glycol Building Blocks for PEGylation.

Functional Polymers for Biomedical Applications

Wide range of functional polymers for biomedical applications have been synthesized and structurally characterized. Several classes of polymers including biodegradable polymers, hydrophilic & amphiphilic polymers, and stimuli responsive polymers have been prepared using controlled and directed functionalization

Continuous Flow Manufacturing for Monomer Synthesis

The manufacture of monomers for use in ophthalmic applications is driven by the need for higher purity, improved reliability of manufacturing supply, but ultimately by the need for the increased comfort, convenience, and safety of contact lens wearers. Daily wear

RAFT Agents for Making Well-Defined Functionalized Polymers

The supply of low cost, high purity and effective Reversible addition−fragmentation chain-transfer (RAFT) Agents is the essential element in the industrial implementation of RAFT polymerization technology.

ATRP Ligands and Initiators for the Clean Synthesis of Functional Polymers

Atom transfer radical polymerization (ATRP) has emerged as one of the most successful synthetic techniques for the preparation of polymers with predetermined molecular weights, narrow molecular weight distributions, and high degrees of chain end functionalities.

Designing Temperature and pH Sensitive NIPAM Based Polymers

Poly(N-isopropylacrylamide), or PNIPAM, is a stimuli-responsive polymer that responds to changes in pH and temperature and has a LCST around 32 C.

Chemistry at Surfaces with Self-Assembled Monolayers and SAMDI-ToF Mass Spectrometry

Materials for High and Low Refractive Index Coatings

Refractive index (RI or n) is of critical importance for photonics applications such as optical waveguides and ophthalmic devices. Based on their unique refractive index characteristics and good optical clarity, polymeric materials are also used as anti-reflective coatings for solar

Electrospinning: An Enabling Technique for Nanostructured Materials

In this article, we discuss issues critical to successful application of the electrospinning technique, including control of individual nanofibers to form secondary structures and assembly of nanofibers into 3D architectures.

Molecular Layer Deposition of Organic and Hybrid Organic-Inorganic Polymers

Atomic layer deposition (ALD) techniques have emerged in the last ten years to meet various needs including semiconductor device miniaturization, conformal deposition on porous structures and coating of nanoparticles. ALD is based on two sequential self-limiting surface reactions.

Asymmetric Polymerization in a Chiral Liquid Crystal Reaction Field

This polymerization method for acetylene in an asymmetric reaction field using a chiral nematic liquid crystal (N*-LC) demonstrates the formation of a polyacetylene film comprised of helical chains and fibrils.

Universal Platform for Surface Modification Employing Grafted Polymer Layers

The present publication focuses on synthesis and characterization of nanothick, chemically grafted polymer films (polymer brushes) on various inorganic and polymeric substrates.

A Micro Review of Reversible Addition/Fragmentation Chain Transfer (RAFT) Polymerization

We presents an article about a micro review of reversible addition/fragmentation chain transfer (RAFT) polymerization. RAFT (Reversible Addition/Fragmentation Chain Transfer) polymerization is a reversible deactivation radical polymerization (RDRP) and one of the more versatile methods for providing living characteristics to

Synthesis and Biomedical Applications of Polyamino Acids

Polymer Analysis in Materials Science

Scientists at Sigma-Aldrich® routinely determine number-average molecular weight (Mn) by 1H NMR end-group analysis for polymers having Mn values under 3,000.

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