摘要:
The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the filed of biodegradable plastics.
摘要:
Polyvinyl alcohol gels, particularly hydrogels, which are produced by methods and formulas and are provided with a characteristic profile that is adjustable to a large extent, e.g., outstanding mechanical properties with moduli of elasticity of 30 MPa and stiffnesses of 25 MPa at a breaking elongation of 550 percent, or full transparency in a wide range of water contents.
摘要:
Polymer mixtures containing a first long-chain polymer and a second short-chain polymer. The structural parameters of the two polymers are coordinated in such a way that a polymeric material is obtained which is easier to process while being provided with improved mechanical properties and in part also improved thermal properties compared with the first polymer at suitable conditions for producing the polymer mixture as a result of networks being formed and heterocrystallization taking place.
摘要:
A method for producing starch films comprises the following steps: preparing a mixture comprising starch and water, wherein more than 50 weight percent of the starch is present in the form of particles of granular starch; shaping the mixture to form a film in a shaping process; solidifying the mixture by increasing the temperature of the mixture during and/or after the shaping process by more than 5° C. Films produced by this method have starch particles bonded to one another. A device for performing this method comprises a shaping device for enabling shaping of the starch material to form a film, and has a heating device for performing a heat treatment for destructuring of the starch during and/or after the shaping.
摘要:
The invention relates to a process for the advantageous production of polymer mixtures with specific molecular weight distributions, having a quantitatively low short-chained proportion and substantially improved processing characteristics, the working up steps during or after the synthesis of the main portion of the polymer mixture being used to produce the mixture.
摘要:
The invention relates to polyvinlyl alcohol gels which are suitable for use in the organism and which are produced at the site of application (in situ) from a viscous liquid by partial crystallization and network formation.
摘要:
The present invention relates to a polymer mixture with a low viscosity, allowing processes for the processing of plastics materials to be accelerated while the final properties of the end products remain the same or are improved. The polymer mixture is mixed with the plastics materials in the manner of an additive. The invention further relates to the production of suitable polymer mixtures of this type and to the use thereof.
摘要:
The present invention relates to a polymer mixture with a low viscosity, allowing processes for the processing of plastics materials to be accelerated while the final properties of the end products remain the same or are improved. The polymer mixture is mixed with the plastics materials in the manner of an additive. The invention further relates to the production of suitable polymer mixtures of this type and to the use thereof.
摘要:
The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the field of biodegradable plastics.
摘要:
A method for producing starch soft capsules comprises the following steps: preparing a mixture comprising starch, plasticizer and water, wherein more than 50 weight percent of the starch is present in the form of particles of granular starch; shaping the mixture to form a film in a shaping process; solidifying the mixture by increasing the temperature of the mixture during and/or after the shaping process by more than 5° C.; and shaping the film to form a soft capsule. Soft capsules produced by this method have starch particles bonded to one another. A device for performing this method comprises a shaping device to enable shaping of the starch material to form a film, and a heating device to perform a heat treatment to destructure the starch during and/or after the shaping. It comprises a rotary die device.