The role of organically modified layered silicate in the breakup and coalescence of droplets in PBT/PE blends

Polymer ◽  
2006 ◽  
Vol 47 (11) ◽  
pp. 3967-3975 ◽  
Author(s):  
Joung Sook Hong ◽  
Han Namkung ◽  
Kyung Hyun Ahn ◽  
Seung Jong Lee ◽  
Chongyoup Kim
Keyword(s):  
Layered Silicate ◽  
Organically Modified

scholarly journals Role of organically modified layered silicate as an active interfacial modifier in immiscible polystyrene/polypropylene blends

Polymer ◽  
2004 ◽  
Vol 45 (25) ◽  
pp. 8403-8413 ◽  
Author(s):  
Suprakas Sinha Ray ◽  
Steve Pouliot ◽  
Mosto Bousmina ◽  
Leszek A. Utracki
Keyword(s):  
Layered Silicate ◽  
Organically Modified ◽  
Polypropylene Blends ◽  
Interfacial Modifier

Biodegradable Polyester / Layered Silicate Nanocomposites

2002 ◽  
Vol 740 ◽  
Author(s):  
Pralay Maiti ◽  
Carl A. Batt ◽  
Emmanuel P. Giannelis
Keyword(s):  
Mechanical Properties ◽  
Storage Modulus ◽  
Layered Silicate ◽  
Layered Silicates ◽  
Melt Extrusion ◽  
Biodegradable Polyester ◽  
Modified Montmorillonite ◽  
Organically Modified Montmorillonite ◽  
Silicate Nanocomposites ◽  
Organically Modified

ABSTRACTNanocomposites of α-hydroxy polyester, polylactide (PLA) and β-hydroxy polyester, polyhydroxybutyrate (PHB) with layered silicates have been successfully prepared by melt extrusion of PLA and PHB with organically modified montmorillonite (MMT) and fluoromica. The mechanical properties of the nanocomposites are improved compared to the neat polymers. Storage modulus increase up to 40% compared with the pure polymers by adding only 2–3 wt% nanoclay. Biodegradation can be controlled by the choice of the nanoclay used.

Polymer Films Possessing Nanoreinforcements via Organically Modified Layered Silicate

2004 ◽  
Vol 16 (6) ◽  
pp. 1135-1142 ◽  
Author(s):  
Fawn M. Uhl ◽  
Siva Prashanth Davuluri ◽  
Shing-Chung Wong ◽  
Dean C. Webster
Keyword(s):  
Polymer Films ◽  
Layered Silicate ◽  
Organically Modified

Novel biobased nanocomposites from functionalized vegetable oil and organically-modified layered silicate clay

Polymer ◽  
2005 ◽  
Vol 46 (2) ◽  
pp. 445-453 ◽  
Author(s):  
Hiroaki Miyagawa ◽  
Manjusri Misra ◽  
Lawrence T. Drzal ◽  
Amar K. Mohanty
Keyword(s):  
Vegetable Oil ◽  
Layered Silicate ◽  
Organically Modified ◽  
Silicate Clay

Preparation of poly(ε-caprolactone) and its nanocomposites in ε-caprolactam

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Jana Kredatusová ◽  
Jana Svobodová ◽  
Jiří Brožek
Keyword(s):  
Linear Dependence ◽  
Molar Mass ◽  
Layered Silicate ◽  
Polymerization Rate ◽  
Polymerization Temperature ◽  
Solution Polymerization ◽  
Structural Units ◽  
Temperature Range ◽  
Organically Modified

Abstract The solution polymerization of ε-caprolactone (CLO) initiated with stannous 2-ethylhexanoate has been studied in the temperature range 90 - 150 °C. ε-Caprolactam (CLA) was used as a solvent. Although relatively high polymerization temperature was used poly(ε-caprolactone) (PCLO) was formed solely and no CLA structural units were incorporated into its chains. The polymerization rate increased with CLO content in feed and polymerization temperature. A linear dependence of molar mass on yield of PCLO indicates living character of polymerization. When polymerization was carried out in the presence of organically modified MMT, nanocomposites PCLO - layered silicate with an exfoliated structure were obtained

Morphology, mechanical, and thermal properties of aramid/layered silicate nanocomposite materials

2008 ◽  
Vol 23 (9) ◽  
pp. 2296-2304 ◽  
Author(s):  
Sonia Zulfiqar ◽  
Muhammad Ilyas Sarwar ◽  
Ingo Lieberwirth ◽  
Zahoor Ahmad
Keyword(s):  
Water Uptake ◽  
Layered Silicate ◽  
Mechanical And Thermal Properties ◽  
X Ray Diffraction ◽  
Elongation At Break ◽  
Solution Intercalation ◽  
Dimethyl Acetamide ◽  
Transmission Electron ◽  
Organically Modified ◽  
Two Phases

Aramid-based nanocomposites were prepared by solution intercalation techniques using p-aminobenzoic acid-modified montmorillonite. Polyamide was synthesized by reacting 4,4′-oxydianiline with isophthaloyl chloride in dimethyl acetamide. To create chemical interactions between the two phases for better dispersion of organoclay, aramid chains were selectively amine end-capped. The influence of organically modified clay on the morphology was investigated by x-ray diffraction (XRD), polarized optical microscopy (POM), and transmission electron microscopy (TEM). Mechanical, thermal, and water uptake measurements were carried out to further verify other physical properties of the nanocomposites. Tensile strength, modulus, elongation at break, and toughness were improved relative to pure polymer with the addition of 6 wt% organoclay. Thermal-decomposition temperatures of the nanocomposites were in the range 300–450 °C. Water uptake of neat aramid film was rather high (5.7%) and decreased with augmenting organoclay. DSC exhibited increase in the glass transition temperature (118 °C) up to addition of 16 wt% of organoclay.

Two Photon Polymerization Micro/Nanofabrication of Suspended Nanorods in Organically Modified Ceramics

NANO ◽  
2017 ◽  
Vol 12 (03) ◽  
pp. 1750033 ◽  
Author(s):  
Jieqiong Lin ◽  
Xian Jing ◽  
Mingming Lu ◽  
Yan Gu ◽  
Baojun Yu ◽  
...  
Keyword(s):  
Scanning Speed ◽  
Processing Parameters ◽  
Polymerization Process ◽  
Experimental Scheme ◽  
Two Photon ◽  
Threshold Theory ◽  
Organically Modified ◽  
Vertical Size ◽  
Two Photon Polymerization

Organically modified ceramics are used as photoresistors in the present work. The role of every ingredient played in two photon polymerization process is analyzed. A simple, compact and easy to locate experimental scheme is designed to fabricate nanorods in Ormocer. Based on the threshold theory of photon intensity, the lateral size dependences and vertical size dependences of nanorods on laser power and scanning speed are investigated, respectively. Through systematically changing processing parameters, a 136[Formula: see text]nm Ormocer suspended nanorod which is beyond diffraction limit resolution is obtained when [Formula: see text]m/s, [Formula: see text][Formula: see text]mW. By this means, two photon polymerization techniques show great potential to obtain a limiting resolution of Ormocer. What is more, micro gear, micro chair, photonic crystal and micro annular lens are fabricated in two photon polymerization in order to exhibit excellent mechanical and optical property of Ormocer.

scholarly journals Effective intercalation of zein into Na-montmorillonite: role of the protein components and use of the developed biointerfaces

2016 ◽  
Vol 7 ◽  
pp. 1772-1782 ◽  
Author(s):  
Ana C S Alcântara ◽  
Margarita Darder ◽  
Pilar Aranda ◽  
Eduardo Ruiz-Hitzky
Keyword(s):  
Water Solution ◽  
Physicochemical Characterization ◽  
Layered Silicate ◽  
Aqueous Dispersion ◽  
Underlying Mechanism ◽  
Ethanol Medium ◽  
Major Storage Protein ◽  
Protein Components

Biohybrid materials based on the intercalation of zein, the major storage protein in corn, into sodium-exchanged montmorillonite were prepared following two synthesis strategies. The first one made use of zein dissolved in 80% (v/v) ethanol/water solution, the usual solvent for this protein, while the second method is new and uses a sequential process that implies the previous separation of zein components in absolute ethanol. This treatment of zein with ethanol renders a soluble yellow phase and an agglomerate of insoluble components, which are able to intercalate the layered silicate when an aqueous dispersion of montmorillonite is added to the ethanol medium containing both phases. The diverse steps in this second route were investigated individually in order to understand the underlying mechanism that drives to the intercalation of this complex hydrophobic biomacromolecule into the hydrophilic interlayer space of sodium-exchanged montmorillonite. In addition to physicochemical characterization of the resulting materials, these biohybrid interfaces were also evaluated as biofillers in the preparation of diverse ecofriendly nanocomposites.

Sign in / Sign up

Export Citation Format

Share Document