✦ LIBER ✦

Crystallization of side chains in copolymers of ethylene and 1-alkenes

✍ Scribed by K. E. Russell; D. C. McFaddin; B. K. Hunter; R. D. Heyding

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 920 KB
Volume: 34
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(199610)34:14<2447::aid-polb12>3.0.co;2-d

No coin nor oath required. For personal study only.

✦ Synopsis

The phase structure of random copolymers of ethylene and ethylene-d, with 1-octadecene and other I-alkenes has been investigated. CPMAS '"C NMR spectra show that a fraction of the central sections of C,6H3:I side chains in ethylene-d, copolymers are in ordered environments at 298 K. They give rise to resonances from 32.9 ppm to 33.8 ppm, which show that they are in trans conformations; Tlc values for this group of resonances range from 1 s to 7 s. The remaining side chains are in an amorphous environment, the internal methylenes having a chemical shift of 30.8 ppm and a T1c close to 0.4 s. A Raman band a t 1062 cm-' in the spectrum of an ethylene-d,-1-octadecene copolymer is consistent with partial crystallization of side chains. Some side-chain crystallization also occurs in a 1-tetradecene copolymer. X-ray diffraction studies suggest that smaller side chains do not crystallize to a significant extent at 298 K.

📜 SIMILAR VOLUMES

Crystallinities of copolymers of ethylen

Crystallinities of copolymers of ethylene and 1-alkenes

✍ S.-D. Clas; R. D. Heyding; D. C. McFaddin; K. E. Russell; M. V. Scammell-Bullock 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 987 KB

Crystallization kinetics of polymer brus

Crystallization kinetics of polymer brushes with poly(ethylene oxide) side chains

✍ Ying Zheng; Merlin L. Bruening; Gregory L. Baker 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 656 KB

## Abstract Isothermal crystallization rates of semicrystalline poly(methoxypoly(ethylene glycol) methacrylate) brushes on gold‐coated substrates were measured by polarized optical microscopy. Growth rates for crystal radii, which were essentially constant for each film, initially increased with fi

Synthesis and characterization of altern

Synthesis and characterization of alternating fluorene–thiophene copolymers bearing ethylene glycol side-chains

✍ Elisabeth Ziegler; Andreas Pein; Achim Fischereder; Gregor Trimmel 📂 Article 📅 2011 🏛 Springer Vienna 🌐 English ⚖ 277 KB

Melting points of homogeneous random cop

Melting points of homogeneous random copolymers of ethylene and 1-alkenes

✍ S.-D. Clas; D. C. McFaddin; K. E. Russell; M. V. Scammell-Bullock; I. R. Peat 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 694 KB

Dynamic mechanical properties of homogen

Dynamic mechanical properties of homogeneous copolymers of ethylene and 1-alkenes

✍ S.-D. Clas; D. C. McFaddin; K. E. Russell 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 681 KB

Side-chain crystallization behavior of g

Side-chain crystallization behavior of graft copolymers consisting of an amorphous main chain and crystalline side chains. II. Poly(n-hexyl methacrylate)-graft-poly(ethylene glycol)

✍ Katsuhiro Inomata; Chieko Fukuda; Kuniyoshi Hori; Hideki Sugimoto; Eiji Nakanish 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 409 KB

## Abstract The phase behavior and crystallization of graft copolymers consisting of poly(__n__‐hexyl methacrylate) (PHMA) as an amorphous main chain and poly(ethylene glycol) (PEG) as crystallizable side chains (HMA__x__ with 15 ≤ __x__ ≤ 73, where __x__ represents the weight percentage of PEG) we