DENDRIMER PARTICLES AND RELATED MIXED MATRIX FILTRATION MEMBRANES, COMPOSITIONS, METHODS, AND SYSTEMS

• US 20160303517A1
• Filed: 01/30/2016
• Published: 10/20/2016
• Est. Priority Date: 01/30/2015
• Status: Abandoned Application

• Current Assignee: California Institute of Technology, Korea Advanced Institute of Science and Technology
• Original Assignee: California Institute of Technology, Korea Advanced Institute of Science and Technology
• Inventors: KUVAREGA, Alex, DIALLO, Mamadou S., KOTTE, Madhusudhana Rao
• Application Number:
  US15/011,547
• Publication Number:
  US 20160303517A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2323/30 Cross-linking
• CPC Class Codes: B01D 2323/39 Electrospinning
• CPC Class Codes: B01D 2323/42 Details of membrane preparation apparatus
• CPC Class Codes: B01D 61/025 Reverse osmosis; Hyperfiltration
• CPC Class Codes: B01D 61/145 Ultrafiltration
• CPC Class Codes: B01D 67/0006 by chemical reactions in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125
• CPC Class Codes: B01D 67/0009 by phase separation, sol-gel transition, evaporation or solvent quenching
• CPC Class Codes: B01D 67/0011 Casting solutions therefor
• CPC Class Codes: B01D 69/12 Composite membranes; Ultra-thin membranes
• CPC Class Codes: B01D 69/125 In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
• CPC Class Codes: B01D 69/141 Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
• CPC Class Codes: B01D 71/34 Polyvinylidene fluoride
• CPC Class Codes: B01D 71/56 Polyamides, e.g. polyester-amides
• CPC Class Codes: B01D 71/60 Polyamines
• CPC Class Codes: C02F 1/285 using synthetic organic sorbents
• CPC Class Codes: C02F 1/444 by ultrafiltration or microfiltration
• CPC Class Codes: C02F 2101/20 Heavy metals or heavy metal compounds

Abstract

Described herein are mixed matrix filtration membranes and related, dendrimers, dendrimer particles, compositions, methods and systems and in particular mixed matrix filtration membranes with an embedded dendrimer particles and related compositions, methods, and systems wherein each dendrimer particle comprises at least two dendrimers each having at least two core chemical moieties having a core multiplicity Nc; branch cell units attached to the core chemical moiety or one to another, with the branch cell units attached one to another having a branch cells multiplicity Nb; and a number of surface functional groups Z presented on terminal branch cell units, wherein Z=NcNb^G with G≦3.

Claims

1. A mixed matrix filtration membrane comprising:

a plurality of dendrimer particles embedded in a polymer matrix wherein each dendrimer particle comprises at least two dendrimers each having

at least two core chemical moieties having a core multiplicity Nc;

branch cell units attached to the core chemical moiety or one to another, with the branch cell units attached one to another having a branch cells multiplicity Nb; and

a number of surface functional groups Z presented on terminal branch cell units, wherein Z=NcNb^G with G≦

3,

2. The mixed matrix filtration membrane of claim 1, comprising a polymer of formula

3. The mixed matrix filtration membrane of claim 1, wherein the polymeric aggregate is formed by a polymer according to Formula (I):

4. The mixed matrix filtration membrane of claim 3, wherein Q, Y, and Z are independently selected from the group consisting of Formulas II-XI:

5. The mixed matrix filtration membrane of claim 1, wherein the dendrimer particles embedded in the polymer matrix are in a concentration of greater than 20 wt %.

6. The mixed matrix filtration membrane of claim 1, wherein the dendrimer particles embedded in the polymer matrix are in a concentration of greater than 40 wt %.

7. The mixed matrix filtration membrane of claim 1, wherein the mixed matrix filtration membrane is a membrane absorber capable of binding metal.

8. The mixed matrix filtration membrane of claim 1, wherein the membrane absorber is capable of binding metal with a mean percentage of bound metal of larger than 50%.

9. A method of making a mixed matrix filtration membrane with embedded dendrimer-like particles, the method comprising:

providing a base polymer substantially soluble in a base polymer solvent;

providing a particle precursor having a portion substantially soluble in the base polymer solvent and a portion substantially insoluble in the base polymer solvent, the polymeric particle precursor able to provide a dispersion of segregated domains in the base polymer solvent, the polymeric particle precursor comprising one dendrimer having

one core chemical moiety with a core multiplicity Nc,

branch cell units attached to the core chemical moiety or one to another, and

a number of terminal functional groups Z presented on terminal branch cell units,

the number of branch cell unit being attached one to another have a branch cells multiplicity Nb, and the number of terminal functional groups Z presented on terminal branch cell units, wherein Z=NcNb^G with G≦

3;

mixing a base polymer with a polymer particle precursor, and the base polymer solvent to provide a blend;

maintaining the blend for a time and under a condition to allow crosslinking of at least some of the terminal functional groups Z and in situ formation of dendrimer particles thus providing a dope solution; and

casting the dope solution to provide the mixed matrix filtration membrane with embedded dendrimer particles.

10. The method of claim 9, wherein the maintaining comprises mixing the blend with a crosslinker and/or an initiator capable of reacting with the polymer particle precursor.

11. The method of claim 9, wherein the polymeric particle precursor is a dendrimer having a general formula (XI):

12. The method of claim 9, wherein the polymeric particle precursors comprise one or more polymeric particle precursor of general formula (XV):

13. The method of claim 9, wherein the polymeric particle precursors comprise G0, G1 and/or G2 PAMAM.

14. The method of claim 9, wherein the polymeric particle precursors comprise G1 and/or G2 poly(propyleneimine) (PPI).

15. The method of claim 9, wherein the polymeric particle precursors have a molecular weight less than 5000 daltons.

16. The method of claim 9, wherein the polymeric particle precursors have a number of terminal groups less than 30.

17. The method of claim 9, wherein the polymeric particle precursors are crosslinked to one another to form the dendrimer particle.

18. A system for making a filtration membrane with in-situ synthesized dendrimer particles, the system comprising

a base polymer for the membrane matrix substantially soluble in a base polymer solvent, and polymeric particle precursors partially soluble in the base polymer solvent the base polymer solvent,

each polymeric particle precursor being capable to form a dispersion of segregated domains in the base polymer solvent, and comprising one core chemical moiety having a core multiplicity Nc, branch cell units attached to the core chemical moiety or one to another, and a number of surface functional groups Z presented on terminal branch cell units,

wherein in each polymeric particle precursor the branch cell units attached one to another having a branch cells multiplicity Nb, and the number of surface functional groups Z presented on terminal branch cell units, wherein Z=NcNb^G with G≦

3, and

wherein the polymer particle precursor present corresponding functional groups.

19. The system of claim 18, further comprising a crosslinker and/or an initiator capable of reacting with the polymer particle precursor.

20. The system of claim 18, further comprising the base polymer solvent or a mixture of solvents compatible with the base polymer solvent capable of dissolving the base polymer and/or a non-solvent substantially incompatible with base polymer solvent or a mixture of non-solvents substantially incompatible with the base polymer solvent for the membrane polymer to promote phase separation and subsequent membrane formation.