Composite resin particles comprising 50 to 800 parts by mass of a polystyrene-based resin with respect to 100 parts by mass of a polyolefin-based resin, wherein: when transmission electron microscope (TEM) images obtained by photographing cross-sections of the composite resin particles using a TEM at a magnification of 1,000 are subjected to a binarization processing and areas in the obtained binarized images which correspond to a cross-sectional area of 437.584 μm.sup.2 of the composite resin particles are subjected to image analysis, the polystyrene-based resin satisfies the following requirements: (1) the number of dispersed particles is 180 or more; (2) the maximum of the areas of dispersed particles is 200 μm.sup.2 or less; and (3) the coefficient of variation in dispersion is 100% or more, and the composite resin particles exhibit an inner morphology that includes a mixture of sea-island structure regions and co-continuous structure regions.

Disclosed are polyethylene polymers with good melt strength that can provide enhanced properties for compositions including such polyethylene polymers and films made therefrom.

The invention relates to an expandable bead comprising a) a polyolefin selected from polyethylene (PE), polypropylene (PP) and mixtures thereof and b) thermoplastic microspheres encapsulating a blowing agent.

The present invention relates to the use of a composition comprising 60-98 wt. % of polypropylene, 2-40 wt. % of low density polyethylene, 0.1-10 wt. % of compatibiliser wherein the compatibiliser is a BAB or AB type of block copolymer comprising a polypropylene block A and a polyester block B, or wherein the compatibiliser is a graft copolymer of the type ABn having a polypropylene backbone A and polyester block(s) B grafted thereon, with n being at least 1, and the polyester block(s) B have an average M/F ratio from 8-32, wherein M is the number of backbone carbon atoms in the polyester not including carbonyl carbon atoms, and F is the number of ester groups in the polyester block(s), wherein the wt. % is based on the sum of the amount polypropylene, low density polyethylene and compatibiliser, for the manufacture of a foamed article.

A method of determining the composition of a polymeric body includes applying electromagnetic radiation to the polymeric body, modulating the electromagnetic radiation using a tagant disposed within a polymer composition forming the polymeric body, and receiving the modulated electromagnetic radiation from the tagant at an infrared detector. The electromagnetic radiation received from the tagant has a signature corresponding to the polymer composition forming the polymeric body. A method of making a polymeric body and system for determining composition of a polymeric body are also described.

Described herein are starch-based materials, and formulations including such for use in directional alignment extrusion processes. The present compositions exhibit critical shear stress characteristics that allow extrusion at high shear rates and line speeds, without onset of melt flow instability. The present compositions provide sufficient melt strength to allow such compositions to be directionally oriented by stretching the heated polymer (e.g., the polymer melt) following initial extrusion, directionally aligning the molecular chains of the heated polymer blend in the machine-direction, the cross-direction, or both. In an embodiment, the starch-based material is blended with one or more thermoplastic materials having desired melt flow index value(s), which serves as a diluent, allowing the very viscous starch-based component to be processed under such conditions. The starch-based materials (and masterbatches thereof) may exhibit high molecular weight, high shear sensitivity, strain hardening behavior, and/or a very high critical shear stress (e.g., at least 125 kPa).

Provided are an ethylene-based polymer capable of obtaining a film in which thickness unevenness is reduced, a method of producing the ethylene-based polymer, and a film containing the ethylene-based polymer. In the ethylene-based polymer according to the present invention, the following Expressions (1) and (2) are satisfied:

0.362≤ηL.sup.1,256%/ηL.sup.10%≤0.466  (1)

0.0282≤I5.sup.2,506%/I1.sup.2,506%≤0.0328  (2)

(Co)polymer matrix composites including a porous (co)polymeric network; a nonvolatile diluent, and a multiplicity of thermally-conductive particles distributed within the (co)polymeric network; wherein the thermally-conductive particles are present in a range from 15 to 99 weight percent, based on the total weight of the (co)polymer matrix (including the thermally-conductive particles and the nonvolatile diluent). Optionally, the (co)polymer matrix composite volumetrically expands by at least 10% of its initial volume when exposed to a temperature of at least 135° C. Methods of making and using the (co)polymer matrix composites are also disclosed. The (co)polymer matrix composites are useful, for example, as heat dissipating or heat absorbing articles, as fillers, thermal interface materials, and thermal management materials, for example, in electronic devices, more particularly mobile handheld electronic devices, power supplies, and batteries.

The present invention is directed to a polyethylene-polypropylene composition comprising a blend (A) being a recycled material, said blend comprising polypropylene and polyethylene, and a compatibilizer (B) being a C.sub.2C.sub.3C.sub.4 terpolymer. Further, the present invention is directed to an article comprising said polyethylene-polypropylene composition and a process for preparing said polyethylene-polypropylene composition. The present invention is also directed to the use of a compatibilizer (B) being a C.sub.2C.sub.3C.sub.4 terpolymer for improving the impact-stiffness balance and the morphology of the blend (A).

A polyolefin-based resin foamed sheet includes a polyolefin-based resin, wherein a thickness of the foamed sheet is 0.05-0.5 mm, a 25% compression hardness defined in JIS K6767(1999) is 20-100 kPa, a ratio of cell sizes in longitudinal and thickness directions is 9-30, a ratio of cell sizes in width and thickness directions is 9-30, and an average cell film thickness in the thickness direction of the foamed sheet is 2-7 μm.