Structure and properties of nanocomposites prepared by directly melt blending ethylene-co-vinylacetate and natural montmorillonite

2006 ◽  
Vol 27 (5) ◽  
pp. 529-532 ◽  
Author(s):  
Hua Zou ◽  
Qingqing Ma ◽  
Yan Tian ◽  
Shishan Wu ◽  
Jian Shen
Keyword(s):  
Melt Blending ◽  
Structure And Properties

Study on structure and properties of biodegradable PLA/PBAT/organic-modified MMT nanocomposites

2019 ◽  
pp. 089270571989090 ◽  
Author(s):  
Hezhi He ◽  
Bida Liu ◽  
Bin Xue ◽  
He Zhang
Keyword(s):  
Mechanical Properties ◽  
Poly Lactic Acid ◽  
Esterification Reaction ◽  
Melt Blending ◽  
Structure And Properties ◽  
Thermal And Mechanical Properties ◽  
Modified Montmorillonite ◽  
Structure Morphology ◽  
Reinforcing Effects ◽  
Thermal Stability Of

Biodegradable polymer blends were prepared by melt blending poly(lactic acid) (PLA), poly(butylene adipate- co-terephthalate) (PBAT), and organic-modified montmorillonite (MMT). The effects of MMT on the structure, morphology, thermal, and mechanical properties of the blends were thoroughly investigated. The results revealed that MMT was preferable to localize on the interface of PLA and PBAT and esterification reaction took place between organic-modified MMT and PLA/PBAT. MMT enhanced the compatibility of PLA and PBAT, accelerated crystallization, and improved the thermal stability of PLA and PBAT. In addition, MMT illustrated the reinforcing effects on PLA and PBAT in their tensile strength, especially for PBAT.

The Structure and Properties of HDPE/EAA-Hydrotalcite Master Batch Nanocomposites

2012 ◽  
Vol 450-451 ◽  
pp. 715-718 ◽  
Author(s):  
Jun Qin ◽  
Huan Zhang ◽  
Li Ping Chen ◽  
Jie Yu
Keyword(s):  
Thermal Stability ◽  
High Density Polyethylene ◽  
Interfacial Adhesion ◽  
Decomposition Temperature ◽  
Melt Blending ◽  
Structure And Properties ◽  
The Matrix ◽  
Onset Decomposition Temperature ◽  
Double Hydroxide ◽  
Master Batch

The High-density polyethylene (HDPE) / the ethylene acrylic acid (EAA) - layered double hydroxide (LDH) nanocomposites were prepared by melt blending with EAA)/ LDH master batch; and the structure and properties of this nanocomposite were studied. The results showed that the EAA acted as an effective compatibilizer for the nanocomposites can enhance the interfacial adhesion between LDH and HDPE obviously, promote the dispersion of LDH in the matrix, increase both the tensile strength and toughness of nanocomposites, and improve the thermal stability and delay the onset decomposition temperature of nanocomposites.

Structure and properties of layered silicate nanocomposites based on polyamide-6 obtained by polymerization in situ and melt blending

2013 ◽  
Vol 8 (11-12) ◽  
pp. 765-772 ◽  
Author(s):  
S. V. Cherdyntseva ◽  
S. I. Belousov ◽  
S. V. Krasheninnikov ◽  
A. L. Vasil’ev ◽  
A. S. Orekhov ◽  
...  
Keyword(s):  
Layered Silicate ◽  
Polyamide 6 ◽  
Melt Blending ◽  
Structure And Properties ◽  
Silicate Nanocomposites

Structure and Properties of MWNTs-OH/PET FDY Composite Fiber

2011 ◽  
Vol 332-334 ◽  
pp. 898-901
Author(s):  
Wen Sheng Hou ◽  
Hai Bin Fan ◽  
Mei Niu ◽  
Jin Ming Dai ◽  
Zi Lu Wu ◽  
...  
Keyword(s):  
Fracture Strength ◽  
Terephthalic Acid ◽  
Composite Fiber ◽  
Melt Blending ◽  
Structure And Properties ◽  
Composite Fibers ◽  
Step Process ◽  
One Step

The MWNTs-OH/PET composite fibers were prepared by the masterbatch melt blending spinning drawing one-step process (FDY), and the structure and properties of different contents of MWNTs-OH of the PET FDY fiber were studied. The results showed that the interaction between MWNTs-OH and PET matrix was enhanced after the modification of terephthalic acid (TPA), resulting in the improved interface compatibility. Also, the crystallinity of the composite fibers was raised 7% after the addition of modified MWNTs-OH. The fracture strength of composite fibers had firstly increased and then decreased with increasing of the content of MWNTs-OH, the strength of the composite fiber was largely improved by 60.5% with 0.2% (wt) of TPA/MWNTs-OH.

Study on Layered Structure and Properties of PP/LLDPE Injection Molding

2012 ◽  
Vol 602-604 ◽  
pp. 685-689
Author(s):  
You Bing Li ◽  
Yan Pan ◽  
Wen Shi ◽  
Xu Ming Sheng ◽  
Bing Dai
Keyword(s):  
Impact Strength ◽  
Injection Molding ◽  
Shear Layer ◽  
Layered Structure ◽  
Preferred Orientation ◽  
Core Region ◽  
Melt Blending ◽  
Structure And Properties ◽  
The Core ◽  
The Impact

The melt blending was used to prepare the PP/LLDPE blend, and the layered structure and properties for PP/LLDPE blends were detailed explored. The addition of LLDPE was beneficial to toughen the PP injection moldings. The impact strength also improved for addtion of LLDPE and the corresponding increase percentage in impact strength was 111% for PP/LLDEPE (65/35, w/w) comapred with pure PP. SEM showed the preferred orientation of lamella obtained in shear layer and core region. WAXD curves showed the peak of (300) β-form for PP component in the skin and core region was evident and nearly disappeared in the shear layer, and the (200) peak for LLDPE component in the skin was stronger than that in the shear layer and core region. The enthalpy value calculated by DSC data increased from the core region to the skin, which indicated the crystallinity for PP/LLDPE blends increased from the core region to the skin.

Structure of second phases in TiAl alloys containing Cr and B

1991 ◽  
Vol 49 ◽  
pp. 576-577
Author(s):  
Ernest L. Hall ◽  
Shyh-Chin Huang
Keyword(s):  
Grain Size ◽  
Second Phase ◽  
Structure And Properties ◽  
Tial Alloys ◽  
Second Phases ◽  
Interstitial Elements

Addition of interstitial elements to γ-TiAl alloys is currently being explored as a method for improving the properties of these alloys. Previous work in which a number of interstitial elements were studied showed that boron was particularly effective in refining the grain size in castings, and led to enhanced strength while maintaining reasonable ductility. Other investigators have shown that B in γ-TiAl alloys tends to promote the formation of TiB2 as a second phase. In this study, the microstructure of Bcontaining TiAl alloys was examined in detail in order to describe the mechanism by which B alters the structure and properties of these alloys.

Relationships between hierarchical structure and properties in macromolecular systems

1987 ◽  
Vol 45 ◽  
pp. 440-443
Author(s):  
E. Baer
Keyword(s):  
Uniaxial Tension ◽  
Hierarchical Structure ◽  
Inorganic Material ◽  
Hierarchical Structures ◽  
Bone Collagen ◽  
Structure And Properties ◽  
Connective Tissues ◽  
Scale Level ◽  
Fibrous Protein ◽  
Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

The Structure and Properties of MoSi2 Thin Film in Mos Process

1980 ◽  
Vol 38 ◽  
pp. 326-327
Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho
Keyword(s):  
Thin Film ◽  
Integrated Circuits ◽  
High Performance ◽  
Large Scale ◽  
Process Development ◽  
Structure And Properties ◽  
Metal Silicides ◽  
High Oxidation ◽  
Important Approach ◽  
High Oxidation Resistance

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.

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