FABRIC MODIFICATION BY RADIATION METHODS

Vincent Luo China General Nuclear

CGN Dasheng Electron Accelerator Technology Co. Ltd.

Jingye Li Shanghai Institute of Applied Physics

Chinese Academy of Sciences

FABRIC

MODIFICATION BY

RADIATION METHODS Vincent Luo

China General Nuclear

CGN Dasheng Electron Accelerator

Technology Co. Ltd.

Jingye Li

Shanghai Institute of Applied Physics

Chinese Academy of Sciences

Main chain:

Strength

Graft chain:

Function

Radiation Induced Graft Polymerization

Key aspect:

Covalent bonding

Applied on Cotton Fabrics

Cotton

Fabric

γ-ray or E-beam

Monomer Monomer+Nanoparticle

Functional Cotton Fabrics Superhydrophobic, Antibacterial, Conductive, Self-cleaning, ……

Advantages by the covalent bonding formation 1. Excellent laundering durability upto hundreds laundering cycles,

2. Excellent abrasion durability upto thousands cycles,

3. Comfort,

4. Undergo steam ironing ……

Superhydrophobicity Fluoro-monomer:

Adv. Mater. 22: 5473, 2010.

Non-fluoro-monomer:

Sci. Rep. 3 : 2951, 2013.

RSC Adv. 5: 27752, 2015.

m

Monomer Routine

Superhydrophobic cotton fabric

0 2 4 6 8 10 12

0

5

10

15

20

25

30

Absorbed Dose=5.3kGy

Dose rate=0.88 kGy/h

Deg

ree o

f g

raft

ing

(%

)

Monomer concentration (vol.%)

Fluoro-monomer:

Adv. Mater. 22: 5473, 2010.

Microstructure of SCF

The microstructure of the fabric is unchanged before

and after the graft polymerization.

It is a suitable use for SCF, as a textile, where the

holes between bundles are retained to permit air

passage.

Laundering durable test setup AATCC

(American

Association

of Textile

Chemists

and

Colorists)

Test Method

61-2006.

2A condition: without; 5A condition: 0.027% active chlorine

0.15% standard

WOB detergent;

49oC, 40 ± 2 rpm

After laundering durability test

The superhydrophobicity

is well kept after 50

accelerated laundering

cycles, equivalent to 250

commercial launderings

or home-machine

launderings.

Also showed a particular oleophilicity, where the

organic liquids with surface tension lower than

30 mN/cm can spread out quickly on SCF.

Non-fluoro-monomer

Sci. Rep. 3 : 2951, 2013.

RSC Adv. 5: 27752, 2015.

X=1, 2, 3, 4, 6, 12

Abrasion test

44.8 kPa, other report about 12kPa.

Self-healing by ironing

Breathability

GB/T 5453-1997

Eq. ISO 9237:1995

GB/T 12704.2-2009

0 10 20 30 40 50

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

38 ℃

50% humidity

Cotton-g-PLMA

Cotton-g-PHMA

Cotton-g-PBMA

Cotton-g-PPMA

Cotton-g-PEMA

Cotton-g-PMMA

No

rm

ali

zed

WV

TR

Degree of Grafting / %

Water vapor transmittance

RIGP tech keep the water vapor transmittance rate as the

pristine cotton fabric, which is important for wearing

comfortable.

Other method cannot make this.

Anti-superbug Imidazolium salt:

ACS Appl. Mater. Interfaces. 8: 19866, 2016.

m

Monomer Routine

多重耐药 Multi-drug Resistant

(MDR)

2013年，美国CDC发布细菌耐药威胁报告 Antibiotic Resistance Threats in the United States, 2013, Centers for Disease Control and Prevention

超强耐药 Extensively Drug-resistant

(XDR)

全耐药（无药可治） Pan-drug Resistant

(PDR)

2014年，WHO发布全球细菌耐药监测报告 Antimicrobial Resistance-Global Report on Surveillance, 2014, World Health Organization

迄今中国尚未出现病例

超级细菌 Superbugs

广泛传播+耐药性强

Anti-superbug and laundering durable cotton fabric

Antibacteria Effect Test Method AATCC 100−2012: Antibacterial Finishes on Textile Materials

or ISO 20743 with different incubation time and calculation method

Contact 24h

@37oC

Incubated 48h

@37oC

1 mL bacteria solution

of 1~2×105 cfu/mL

C0h A24h

Reduction = (C0h-A24h)/C0h×100%

Cotton

The colony of A. calcoaceticus carrying blaNDM-1 gene

Antibacteria Effect

Cotton-g-PBVIM

Superbugs

Step 1. Electrostatic interaction

of the cationic portion with the

negatively charged bacterial

cell wall.

Step 2. Lipophilic groups disturb

cell membranes, resulting in

leakage of intracellular

substances and cell death.

Antibacteria Mechanism

After 150 laundering cycles

Laundering durability lies in the formation of covalent bonds

Skin Irritation Test (Rabbit): Negative ISO 10993.10−2010

Cotton-g-PBVIM

Cotton

No

erythema

or

edema

Pilot Trial by an industrial facility

FABRIC MODIFICATION BY RADIATION METHODS

Vincent Luo China General Nuclear

CGN Dasheng Electron Accelerator Technology Co. Ltd.

Jingye Li Shanghai Institute of Applied Physics

Chinese Academy of Sciences

Thank You ！