Polyoxymethylene Nanoparticles

Michael Haubs; Klaus Kurz; B Bannwarth Markus; Katharina Landfester; R Wurm Frederik; Holger Frey; Rebecca Klein

Polyoxymethylene Nanoparticles

Michael Haubs (Inventor), Klaus Kurz (Inventor), B Bannwarth Markus (Inventor), Katharina Landfester (Inventor), R Wurm Frederik (Inventor), Holger Frey (Inventor), Rebecca Klein (Inventor)

Research output: Patent

Abstract

The synthesis of nanoparticles based on hyperbranched-linear-hyperbranched ABA triblock copolymers with hyperbranched polyglycerol (hbPG) as A-block and linear poly(oxymethylene) as B-block is described. The acid-degradable nanoparticles were formed in a facile process, combining a solvent evaporation process with the miniemulsion technique resulting in particles with a diameter in the range of 190 to 250 nm and a standard deviation of ̃30% determined with DLS and SEM. The nanoparticles were placed on a silicon wafer and sintered leading to films with a thickness in the μm-range investigated via SEM. The surface properties of these films were investigated via static contact angle measurements at the liquid/vapor interface. The contact angle decreases from 67° for the polymer with two hydroxyl groups to 29° for the polymer with 16 hydroxyl groups, confirming the influence of the polymer structure and size of the hbPG block on the surface properties.

Original language	English
Patent number	US2016272807
IPC	C08L 59/ 02 A I
Priority date	18/03/16
Publication status	Published - 22 Sep 2016
Externally published	Yes

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title = "Polyoxymethylene Nanoparticles",

abstract = "The synthesis of nanoparticles based on hyperbranched-linear-hyperbranched ABA triblock copolymers with hyperbranched polyglycerol (hbPG) as A-block and linear poly(oxymethylene) as B-block is described. The acid-degradable nanoparticles were formed in a facile process, combining a solvent evaporation process with the miniemulsion technique resulting in particles with a diameter in the range of 190 to 250 nm and a standard deviation of{\~ }30% determined with DLS and SEM. The nanoparticles were placed on a silicon wafer and sintered leading to films with a thickness in the μm-range investigated via SEM. The surface properties of these films were investigated via static contact angle measurements at the liquid/vapor interface. The contact angle decreases from 67° for the polymer with two hydroxyl groups to 29° for the polymer with 16 hydroxyl groups, confirming the influence of the polymer structure and size of the hbPG block on the surface properties.",

author = "Michael Haubs and Klaus Kurz and {Bannwarth Markus}, B and Katharina Landfester and {Wurm Frederik}, R and Holger Frey and Rebecca Klein",

year = "2016",

month = sep,

day = "22",

language = "English",

type = "Patent",

note = "US2016272807; C08L 59/ 02 A I",

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TY - PAT

T1 - Polyoxymethylene Nanoparticles

AU - Haubs, Michael

AU - Kurz, Klaus

AU - Bannwarth Markus, B

AU - Landfester, Katharina

AU - Wurm Frederik, R

AU - Frey, Holger

AU - Klein, Rebecca

PY - 2016/9/22

Y1 - 2016/9/22

N2 - The synthesis of nanoparticles based on hyperbranched-linear-hyperbranched ABA triblock copolymers with hyperbranched polyglycerol (hbPG) as A-block and linear poly(oxymethylene) as B-block is described. The acid-degradable nanoparticles were formed in a facile process, combining a solvent evaporation process with the miniemulsion technique resulting in particles with a diameter in the range of 190 to 250 nm and a standard deviation of ̃30% determined with DLS and SEM. The nanoparticles were placed on a silicon wafer and sintered leading to films with a thickness in the μm-range investigated via SEM. The surface properties of these films were investigated via static contact angle measurements at the liquid/vapor interface. The contact angle decreases from 67° for the polymer with two hydroxyl groups to 29° for the polymer with 16 hydroxyl groups, confirming the influence of the polymer structure and size of the hbPG block on the surface properties.

AB - The synthesis of nanoparticles based on hyperbranched-linear-hyperbranched ABA triblock copolymers with hyperbranched polyglycerol (hbPG) as A-block and linear poly(oxymethylene) as B-block is described. The acid-degradable nanoparticles were formed in a facile process, combining a solvent evaporation process with the miniemulsion technique resulting in particles with a diameter in the range of 190 to 250 nm and a standard deviation of ̃30% determined with DLS and SEM. The nanoparticles were placed on a silicon wafer and sintered leading to films with a thickness in the μm-range investigated via SEM. The surface properties of these films were investigated via static contact angle measurements at the liquid/vapor interface. The contact angle decreases from 67° for the polymer with two hydroxyl groups to 29° for the polymer with 16 hydroxyl groups, confirming the influence of the polymer structure and size of the hbPG block on the surface properties.

M3 - Patent

M1 - US2016272807

ER -