Molecular orientation distribution in injection-molded polycarbonate discs
β Scribed by Mikio Takeshima; Nobuhiro Funakoshi
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 584 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
## Abstract The influence of the flow history experienced during injection molding on the mechanical properties of amorphous polymers is investigated. It is demonstrated that flowβinduced molecular orientation only causes a small anisotropic effect on the yield stress, which can be regarded as insi
The orientation of polymer chains after injection molding is usually studied using techniques that measure the average orientation of molecular segments. Small-angle neutron scattering (SANS) is a technique for measuring the overall chain orientation and is very sensitive to molecular anisotropy. In
## Abstract **Summary:** Polycarbonate (PC)/polyethylene (PE) blend was injection molded at different molding temperatures. The morphological observation by scanning electronic microscope (SEM) indicated that the sample molded at 190βΒ°C contained only uniformly dispersed spherical PC particles. The
## Abstract **Summary:** A fiberβdependent double yielding phenomenon was recently observed in a structurally different blend, PC/HDPE, in which the first yield point is yielding of HDPE, and the second is caused by the yielding of injectionβinduced PC fibers. The present study described the compos