1 / 10

Blow Moulding Process & Barrier Containers Part 1.4 Basic Polypropylene chemistry

Blow Moulding Process & Barrier Containers Part 1.4 Basic Polypropylene chemistry. 1869 Celluloid 1930 Polystyrene (PS) 1933 Acrylic (PMMA) 1938 Polyvinyl Chloride (PVC) 1938 Polyamide (Nylon) 1939 Low Density Polyethylene (LDPE) 1940 Polyurethane

thad
Download Presentation

Blow Moulding Process & Barrier Containers Part 1.4 Basic Polypropylene chemistry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Blow Moulding Process & Barrier ContainersPart 1.4 Basic Polypropylene chemistry

  2. 1869 Celluloid 1930 Polystyrene (PS) 1933 Acrylic (PMMA) 1938 Polyvinyl Chloride (PVC) 1938 Polyamide (Nylon) 1939 Low Density Polyethylene (LDPE) 1940 Polyurethane 1941 Polytetrafluoroethylene (PTFE; Teflon) 1943 Silicones 1946 Epoxy Resins 1955 High Density Polyethylene (HDPE) 1956 Polycarbonate (PC) 1957 Polypropylene (PP) History of Plastics

  3. Propylene Monomer and Polypropylene Polymer

  4. PP Types

  5. Use onlyone monomer, propylene in this case Homopolymer Structure: PPPPPPPPPPPPPPPP Standard abbreviation: HPP other abbreviations: PPH, PP Homopolymers consist of: isotactic PP 85-99% atactic PP 1-3% stereoblock 5-14% syndiotactic 0-2% HPP is used for all applications Homopolymer

  6. Contain Ethylene and Propylene evenly distributed throughout each molecule Random Copolymer Structure: EPPPPPPPEPPPPPEPPP Standard abbreviation: RCP Other abbreviations: RCPP, RACO, PPR, Mini-copo RCP’s are used for their superior clarity, flexibility, sealability, orientability and/or lower crystallization temperature RCP’s contain 0.4 to 7% ethylene Random Copolymers

  7. Contents contain 2 phases. matrix is typically HPP dispersed phase consists of molecules of ethylene-propylene rubber (EPR) Also called a block copolymer Impact Copolymer: PPPPPPPP + EPPEEPEPEP + PPPPPPP Standard abbreviation: ICPalso calledHeterophasicCopolymers Other abbreviations: HCP, HECO, PPC ICP’s are normally designed to maximize impact resistance & stiffness ICP’s contain 5 to 25% ethylene Impact Copolymers

  8. Is a stereoregular form of PP and is the main component of HPP. Hard and semi-crystalline The level of isotacticity in the polymer is proportional to modulus or stiffness Has all methyl groups on one side of molecule Isotactic PP (iPP)

  9. Is a stereoregular form of PP (made by ATOFINA) tough and rubbery methyl groups alternates to the opposite side of the molecule e.g. Syndiotactic PP (sPP)

  10. An irregular form of PP Soft and waxy, or soft & rubbery Amorphous low molecular weight waxes The methyl groups are oriented randomly e.g. Atactic PP (aPP)

More Related