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Medical applications

  

Medical grades of Pebax® polyether block amide (PEBA) are plasticizer-free thermoplastic elastomers that offer remarkable processing ease. The Pebax® product range extends from soft and flexible products similar to elastomers, to those with mechanical properties approaching polyamides. This wide range of physical and mechanical properties, achieved by varying the monomeric block types and ratios, make Pebax® MED an excellent choice for extrusion of medical grade tubing or film applications.

Pebax® MED elastomers are ideal for medical device design, helping surgeons with durable, tubing & catheters and lightweight breathable surgical gowns.

Unique advantages of Pebax® MED

Medical use

  • USP Class VI certification
  • Sterilization feasibility (Contact us for information on Steam, ETO and gamma sterilizations)
  • MED grades have qualifying specifications with 12-months change notification and dedicated manufacturing locations.

 

Mechanical properties

  • Excellent impact resistance and low rigidity at low temperature
  • Consistent hardness and flexibility at room and body temperatures
  • High torque transference and kink resistance


Physical & chemical properties


Processability

  • Excellent processability, especially in injection molding (10-30% shorter cycle time vs other TPE)
  • Bondable by adhesives or RF welding
  • Easily blended with other polymers and compounded with additives

 

Specific properties (hydrophilic grades)


Typical applications for Pebax® MED

  • Catheters (angioplasty, stent-delivery, diagnostic, ablation…)
  • Balloons
  • Tubes (peristaltic pumps, connecting tubes, colonoscopes, hearing aids…)
  • Small-dimension molded parts
Pebax® MED demonstrates end-use as a very thin, lightweight, breathable polymeric catheter for metallic stent-delivery.

Typical properties for Pebax® MED

 

 

 

 

 Pebax® MED Grade Range

Description

Test
Method

Units

2533 SA 01 MED

3533 SA 01 MED

4033 SA 01 MED

4533 SA 01 MED

5533 SA 01 MED

6333 SA 01 MED

7033 SA 01 MED

7233 SA 01 MED

MV1074

SA01 MED

(Hydrophilic grade)

Hardness

ISO 868

Shore D

27

     33

42

46

     54

64

69

     69

40

Tensile strength at break

ISO 527

Mpa

32

39

40

42

52

     53

     54

56

30

Tensile strain at break

ISO 527

%

  >750

   >600

   >450

    550

  >450

  >350

>350

  >300

>700

Flexural modulus

ISO 178

MPa

12

     21

77

86

170

285

390

510

80

Melting point

ISO 11 357

°C

134

144

160

147

159

169

172

174

158

Water absorption at equilibrium

(At 20°C and 50% R.H.)

ISO 62

%

    0,4

     0,4

0,5

0,4

0,6

0,7

0,7

0,7

1,4

Shrinkage

(after 24h, 4mm, mold at 40°C)

Parallel

Internal method

%

0,5

     0,5

0,4

0,4

1,2

1,2

1,2

1,2

-

Perpendicular

Internal method

%

0,8

0,8

1,1

1,1

1,4

1,4

1,5

1,5

-

Pebax® MED processing

 

Process Main properties Processing guidelines
Tube extrusion    
  • Softness and flexibility
  • Elastic/shape memory
  • Kink resistance
  • Torque transference
  • Low coefficient of friction
  • Resistance to pressure
  • Can be compounded with radiopaque fillers
    (20-50%) 
  • Can be used in co-extrusion with TPU
See extrusion conditions of Pebax®
Injection
  • High fluidity: good material for small part molding
  • 10-30% shorter cycle time than TPU or COPE
See injection molding recommendations
Film extrusion
  • Waterproof
  • Washable
  • Breathable
  • Antistatic properties

See extrusion conditions of Pebax®

Discover our full range of polyamides for medical applications

Arkema offers the widest range of polyamide grades dedicated to the medical device industry.

 

Light and flexible transparent polyamide

Durable and biobased polyamide

High performance and versatile PA12        

 

 

Arkema medical policy

Arkema has implemented an internal Medical Device Policy regarding the use of Arkema products in medical device applications that are in contact with the body or circulating bodily fluids. 

 

More information on the Arkema medical policy