Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big...
-
Upload
brandon-bond -
Category
Documents
-
view
215 -
download
1
Transcript of Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big...
![Page 1: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/1.jpg)
Block Copolymers
Block copolymers are a fascinating class of polymeric materials belonging to a bigfamily known as ‘‘soft materials.’’ This class of polymers is made by the covalentbonding of two or more polymeric chains that, in most cases, are thermodynamicallyincompatible giving rise to a rich variety of microstructures in bulk and insolution. The length scale of these microstructures is comparable to the size of theblock copolymers molecules (typically 5–50 nm); therefore, the microstructures arehighly coupled to the physical and chemical characteristics of the molecules. Thevariety of microstructures gives rise to materials with applications ranging fromthermoplastic elastomers and high-impact plastics to pressure-sensitive adhesives,additives, foams, etc. In addition, block copolymers are very strong candidates forpotential applications in advanced technologies such as information storage, drugdelivery, and photonic crystals.
![Page 2: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/2.jpg)
AB type block copolymers
Four main synthetic routes have been developed (Figure 8.1) to prepare well-defineddiblock copolymers with narrow molecular weight distribution and very lowcompositional heterogeneity.
![Page 3: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/3.jpg)
ABA
![Page 4: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/4.jpg)
ABC
![Page 5: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/5.jpg)
Graft copolymers
![Page 6: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/6.jpg)
![Page 7: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/7.jpg)
![Page 8: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/8.jpg)
Target Structure: Linear densely grafted copolymer
Method: Functional monomer (protected), ATRP, Deprotection, Macroinitiator, ATRP
Chemistry
![Page 9: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/9.jpg)
Polymer 45 (2004) 8173–8179
![Page 10: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/10.jpg)
Macromolecules 2005, 38, 702-708
![Page 11: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/11.jpg)
Grafting to reactions require the coupling of individual preformed tele-functional side chain precursors to a backbone polymer with distributed complementary functionality.
Grafting through consists of the polymerization of macromonomers.
Grafting from involves preparing the precursor to the backbone polymer with monomer units that contain functionalities ultimately capable of initiating polymerization of a second monomer.
![Page 12: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/12.jpg)
Aim: Stimuli-responsive Bottle-brush Polymer Macromol. Rapid Commun. 2013Kejian Yao , Ying Chen , Jun Zhang , Clay Bunyard , Chuanbing Tang
Method
Chemistry
![Page 13: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/13.jpg)
![Page 14: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/14.jpg)
Ring opening metathesis polymerization (ROMP)
![Page 15: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/15.jpg)
![Page 16: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/16.jpg)
![Page 17: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/17.jpg)
![Page 18: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/18.jpg)
![Page 19: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/19.jpg)
![Page 20: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/20.jpg)
![Page 21: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/21.jpg)
Synthesis of Block-Copolymer via Crossover-Chemistry in ROMP
Binder, Wolfgang Macromolecules 2009
![Page 22: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/22.jpg)
Monofunctional Metathesis Polymers via Sacrificial Diblock Copolymers
Angew. Chem. Int. Ed. 2006, 45, 8045 –8048
![Page 23: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/23.jpg)
“Perfect Comb” ADMET Graft Copolymers
Macromolecules 2001, 34, 6845-6849
![Page 24: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/24.jpg)
Macrocyclization of Polymers via Ring-Closing Metathesis and Azide/Alkyne-‘‘Click’’-Reactions: Journal of Polymer Science: Part A: Polymer Chemistry, Vol. 48, 671–680 (2010)
![Page 25: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/25.jpg)
![Page 26: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/26.jpg)
![Page 27: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/27.jpg)
![Page 28: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/28.jpg)
![Page 29: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/29.jpg)
![Page 30: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/30.jpg)
![Page 31: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/31.jpg)
![Page 32: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/32.jpg)
![Page 33: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/33.jpg)
![Page 34: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/34.jpg)
![Page 35: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/35.jpg)
![Page 36: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/36.jpg)
![Page 37: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/37.jpg)
![Page 38: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/38.jpg)
![Page 39: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/39.jpg)
![Page 40: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/40.jpg)
![Page 41: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/41.jpg)
![Page 42: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/42.jpg)
![Page 43: Block Copolymers Block copolymers are a fascinating class of polymeric materials belonging to a big family known as ‘‘soft materials.’’ This class of polymers.](https://reader037.fdocuments.in/reader037/viewer/2022103122/56649f525503460f94c75742/html5/thumbnails/43.jpg)