Bölüm 21
Sentetik Polimerler
Homopolimerlerin özellikleri ve isimlendirilmesi
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer ...
Kopolimerlerin Özellikleri ve İsimlendirilmesi
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating ...
Polimerler: Moleküler Ağırlığın Tanımlanması
Unlike small molecules with definite molecular weights, polymers are a mixture of individual polymer chains of varying lengths, each with a unique ...
Polimerler: Moleküler Ağırlık Dağılımı
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only ...
Polimer Sınıflandırması: Mimari
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like ...
Polimer Sınıflandırması: Kristallik
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. ...
Polimer Sınıflandırması: Stereospesifiklik
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a ...
Radikal Zincir Büyüme Polimerizasyonu: Genel Bakış
Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the ...
Radikal Zincir Büyüme Polimerizasyonu: Mekanizma
The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization ...
Radikal Zincir Büyüme Polimerizasyonu: Zincir Dallanması
The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical ...
Anyonik Zincir Büyüme Polimerizasyonu: Genel Bakış
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth ...
Anyonik Zincir Büyüme Polimerizasyonu: Mekanizma
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic ...
Katyonik Zincir Büyüme Polimerizasyonu: Mekanizma
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization ...
Ziegler-Natta Zincir Büyüme Polimerizasyonu: Genel Bakış
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched ...
Basamak Büyüme Polimerizasyonu: Genel Bakış
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are ...
Basamak Büyüme Polimerlerinin Moleküler Ağırlığı
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas ...
Kademeli Büyüme Polimerlerinin Çeşitleri: Polyesterler
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the ...
Olefin Metatez Polimerizasyonu: Genel Bakış
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on ...
Olefin Metatez Polimerizasyonu: Halka Açma Metatez Polimerizasyonu (ROMP)
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting ...
Olefin Metatez Polimerizasyonu: Asiklik Dien Metatezi (ADMET)
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear ...
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