title: New routes to the synthesis of amylose-block-polystyrene rod-coil block copolymers.
abstract: Hybrid block copolymers amylose-block-polystyrene were synthesized by covalent attachment of maltoheptaose derivatives to end-functionalized polystyrene and subsequent enzymatic grafting from polymerization. The maltoheptaose derivatives were attached by reductive amination or hydrosilation to amino- or SiH-terminated polystyrene (synthesized by anionic polymerization), respectively. The enzymatic polymerization could be started even though the primer-modified polystyrenes were insoluble in the medium of polymerization, i.e., citrate buffer. The polymerization kinetics show an interesting dependence on the molecular weight of polystyrene due to the micellar structure of the primer in water.
authors.affiliation: Makromolekulare Chemie II and Bayreuther Zentrum für Kolloide und Grenzflächen, Universität Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Katja
authors.initials: K
authors.lastname: Loos
authors.forename: Axel H E
authors.initials: AH
authors.lastname: Müller
mesh_terms: D000586:Amination; D000688:Amylose / Q000737:chemistry*; D002021:Buffers; D002240:Carbohydrate Sequence; D005936:Glucans / Q000138:chemical synthesis / Q000737:chemistry; D008969:Molecular Sequence Data; D008970:Molecular Weight; D011108:Polymers / Q000138:chemical synthesis*; D011137:Polystyrenes / Q000737:chemistry*; D024941:Starch Phosphorylase
chemical_list: D002021:Buffers; D005936:Glucans; D011108:Polymers; D011137:Polystyrenes; C031146:maltoheptaose; D000688:Amylose; D024941:Starch Phosphorylase