Does having emphysema make it less likely that my father will recover from his triple bypass?

Can increase risk. Lung disease like emphysema can increase risk of lung complications after surgery. But, they can be managed.
It might. Any coexisting medical condition has the potential to complicate recovery from bypass surgery. In his case, the emphysema should be optimized with medication and education prior to surgery. After the operation, the condition will be closely monitored and treated, that will portend for a better outcome.