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Synthesis of Exfoliated Monomer Casting Polyamide 6/Na+-Montmorillonite Nanocomposites by Anionic Ring Opening Polymerization

✍ Scribed by Andong Liu; Tingxiu Xie; Guisheng Yang

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
208 KB
Volume
207
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Summary: In this work, a novel method using water as a pre‐dispersant of pristine sodium montmorillonite (Na^+^‐MMT) and ε‐caprolactam (CL) monomer was developed for the preparation of exfoliated monomer casting polyamide 6 (MCPA6)/MMT nanocomposites via in situ anionic ring opening polymerization. The dispersion effect of MMT in the MCPA6 matrix was investigated by means of X‐ray diffraction (XRD), as well as transmission electronic microscopy (TEM). The results indicated that nanoscale dispersed MMT was successfully achieved in the MCPA6 matrix. Furthermore, the addition of a small amount of MMT dramatically improved the thermal stability of MCAP6. Analysis using differential scanning calorimetry (DSC) and XRD indicated that nanoscale dispersed MMT sheets acted as heterogeneous nucleation agents, which favored the formation of the γ‐crystalline form of the MCPA6 matrix.

MMT dispersing sketch in the course of polymerization.

magnified imageMMT dispersing sketch in the course of polymerization.

📜 SIMILAR VOLUMES

Properties of Nylon-6/Na+-Montmorillonit
Properties of Nylon-6/Na+-Montmorillonite Nanocomposites Obtained by Hydrolyzed Ring-Opening Polymerization
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## Abstract **Summary:** Nylon‐6/Na^+^‐montmorillonite (MMT) nanocomposites (NNNs) are synthesized by a hydrolyzed ring‐opening polymerization. At a loading of only 2 wt.‐% MMT, the tensile modulus, the flexural modulus, and the heat distortion temperature of the NNNs exhibit increases of nearly 20

Comparison of Polyamide-6 Nanocomposites
Comparison of Polyamide-6 Nanocomposites Based on Pristine and Organic Montmorillonite Obtained via Anionic Ring-Opening Polymerization
✍ Andong Liu; Tingxiu Xie; Guisheng Yang 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 194 KB

## Abstract **Summary:** Exfoliated Na^+^‐MMT/polyamide‐6 and intercalated organic MMT/polyamide‐6 nanocomposites were prepared using sodium montmorillonite with water dispersion and organic MMT with acetone dispersion via anionic ring‐opening polymerization, respectively. The effects of Na^+^‐MMT