Enteric elastomers

A polymer composite, comprising:

• a first polymer comprising a structure as in Formula (I):
• or a pharmaceutically acceptable salt thereof, wherein:
• each R1 is selected from the group consisting of alkylene, substituted alkylene, heteroalkylene, substituted heteroalkylene, arylene, substituted arylene, heteroarylene, and substituted heteroarylene;
• each R2 is selected from the group consisting of hydrogen, alkyl, substituted alkyl, heteroalkyl, and substituted heteroalkyl;
• each R3 is selected from the group consisting of alkylene, substituted alkylene, heteroalkylene, and substituted heteroalkylene;
• n is an integer between 25 and 250,000;
• and
• a second polymer comprising a structure as in Formula (II) hydrogen bonded to the first polymer:
• or a pharmaceutically acceptable salt thereof, wherein:
• each R4 is selected from the group consisting of alkylene, substituted alkylene, heteroalkylene, and substituted heteroalkylene;
• each R5 is selected from the group consisting of alkylene, substituted alkylene, heteroalkylene, and substituted heteroalkylene;
• each R6 is selected from the group consisting of hydrogen, alkyl, substituted alkyl, heteroalkyl, and substituted heteroalkyl;
• each R7 is selected from the group consisting of hydrogen, alkyl, substituted alkyl, heteroalkyl, and substituted heteroalkyl;
• each R8 is selected from the group consisting of alkyl and substituted alkyl;
• p is an integer between 1 and 10;
• q is an integer between 1 and 10;
• and
• z is an integer between 1 and 150,000, provided that (p+q)*z is greater than or equal to 20.