✦ LIBER ✦

Cure behavior, morphology, and mechanical properties of the melt blends of epoxy with polyphenylene oxide

✍ Scribed by S. J. Wu; T. K. Lin; S. S. Shyu

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 330 KB
Volume: 75
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(20000103)75:1<26::aid-app4>3.0.co;2-3

No coin nor oath required. For personal study only.

✦ Synopsis

Cure behavior, miscibility, and phase separation have been studied in blends of polyphenylene oxide (PPO) with diglycidyl ether of bisphenol A (DGEBA) resin and cyanate ester hardener. An autocatalytic mechanism was observed for the epoxy/PPO blends and the neat epoxy. It was also found that the epoxy/PPO blends react faster than the neat epoxy. During cure, the epoxy resin is polymerized, and the reaction-induced phase separation is accompanied by phase inversion upon the concentration of PPO greater than 50 phr. The dynamic mechanical measurements indicate that the two-phase character and partial mixing existed in all the mixtures. However, the two-phase particulate morphology was not uniform especially at a low PPO content. In order to improve the uniformity and miscibility, triallylisocyanurate (TAIC) was evaluated as an in situ compatibilizer for epoxy/PPO blends. TAIC is miscible in epoxy, and the PPO chains are bound to TAIC network. SEM observations show that adding TAIC improves the miscibility and solvent resistance of the epoxy/PPO blends.

📜 SIMILAR VOLUMES

Effects of polyphenylene oxide content o

Effects of polyphenylene oxide content on morphology, thermal, and mechanical properties of polyphenylene oxide/polyamide 6 blends

✍ Yulin Li; Tingxiu Xie; Guisheng Yang 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 442 KB 👁 1 views

## Abstract A series of composites of PPO/PA 6 with improved toughness were synthesized by using ε‐caprolactam as a reactive solvent. Inserting minor PPO macromolecules (1–3 wt %) into PA 6 matrix obviously reduced the crystallinity of PA6. Two crystallization temperatures were found when 6 wt % PP

Effects of bulk morphology on the mechan

Effects of bulk morphology on the mechanical properties of melt-blended PP/PS blends

✍ Kazuhiro Yoshida; Takanobu Kawamura; Minoru Terano; Koh-hei Nitta 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 420 KB 👁 1 views

## Abstract We investigated the relationship between morphology and mechanical properties in binary blends of isotactic polypropylene (PP) and atactic polystyrene (PS) showing completely phase‐separated morphology. The domain size and crystallinity in PP phase were controlled by the comp‐molding co

The influence of silicate modification a

The influence of silicate modification and compatibilizers on mechanical properties and morphology of anhydride-cured epoxy nanocomposites

✍ Carsten Zilg; Ralf Thomann; Jürgen Finter; Rolf Mülhaupt 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 93 KB 👁 1 views

Young's modulus and tensile strength of nanocomposites containing 10 wt.-% of C12A compatibilized with DDS (wt.-% with respect

Intractable high-Tg thermoplastics proce

Intractable high-Tg thermoplastics processed with epoxy resin: Interfacial adhesion and mechanical properties of the cured blends

✍ A. Bonnet; B. Lestriez; J. P. Pascault; H. Sautereau 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 411 KB 👁 1 views

Curing behavior and properties of epoxy

Curing behavior and properties of epoxy resins cured with the diamine having the quinoxaline or triazine structure

✍ Fumihiko Akutsu; Mari Inoki; Nobuyoshi Daicho; Yoshio Kasashima; Norifumi Shirai 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 108 KB 👁 2 views

2,3-Bis(4-aminophenyl)quinoxaline (1a), 2,3-bis(4-aminophenyl)-6-methylquinoxaline (1b), and 5,6-bis(4-aminophenyl)-3-(2-pyridyl)-1,2,4-triazine (2) were studied as curing agents of epoxy resins. The exotherms on differential scanning calorimetry thermograms of the mixtures of diglycidyl ether of bi

Compatibilization of poly(2,6-dimethyl-1

Compatibilization of poly(2,6-dimethyl-1,4-phenylene oxide)/polyamide 6 blends with styrene–maleic anhydride copolymer: Mechanical properties, morphology, crystallization, and melting behavior

✍ Shuai Wang; Bo Li; Yong Zhang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 495 KB